2016.1

GasketCATALOGUE No.ZY03

VALQUA GASKETAs a total sealing manufacturer, NIPPON VALQUA INDUSTRIES(VALQUA) has been focusing on the development of highly
reliable sealing products that can be adapted to every
industry, such as chemical, energy and other industries.
We would like to take this opportunity to introduce our wide
product lineup of gasket products.

Registered trademarks
The below are our registered trademarks in Japan.
Indicators of registered trademarks have been omitted within this catalogue.

● CLEANTIGHT● CORDSEAL● TRYPACK● NONASUPER● VALQUA● VALQUATEX● VALQUAFOIL● VALQUALON● VALFLON● BRIGHTHYPER● BLACKTIGHT● BLACKHYPER● WHITETIGHT● WHITEHYPER● UNIVERSALHYPER● VALQUA● VALQUA(mark)Gasket Selection Criteria

Metal Gasket▼Precautions for Safe Handling …………………… 1▼Metallic Flat Gasket ……………………………… 35▼Representative Product in Each Operating Temperature … 2▼Gasket Selection Example with Respect to Fluid, Temperatureand Pressure …………………………………………… 3

Soft Gasket▼High Performance Non-asbestos Sheet Gasket … 7
High Performance Non-asbestos Sheet Gasket

VALQUA No. UF300 / GF300 / SF300 / MF300▼Compressed Non-asbestos Fiber Sheet Gasket … 10
Compressed Non-asbestos Fiber Sheet Gasket

VALQUA No.6500 / 6500AC / 6502 / 6503 /6503AC▼Fluorocarbon Resin Sheet Gasket ……………… 15
VALFLON Sheet Gasket▼Fluorocarbon Resin Gasket ……………………… 17

VALQUA No.540 Series / 6560 Series /560 Series / 6540H Series /6540HP Series▼Ring Joint Gasket ………………………………… 37

VALQUA No.550 Series▼Metal C-ring Gasket with Spring ………………… 39
TRYPACKVALQUA No.3645 / 3645LS Series▼Metal Hollow O-ring Gasket ……………………… 41

VALQUA No.3640 / 3641 Series

Rubber-coated Fabric / Rubber Sheet Gasket▼Rubber Coated Fabric Gasket …………………… 43
VALQUATEX Gasket

VALQUA No.N214 / N314
▼Rubber Sheet Gasket ……………………………… 43
Synthetic Rubber Sheet Gasket

CORDSEAL <Soft>VALQUA No.2010 (NBR / CR / EPDM) /4010 / 5010

▼Fluorocarbon Resin Envelope Gasket …………… 19
VALFLON Envelope Gasket

VALQUA No.N7030 / N7031 / N7035

VALQUAFOIL Gasket▼Flame-Resistant Carbonized Fiber Textile ……… 44

VALQUA No.101C / 105C / 112C
▼Heat-Resistant Glass Fiber Textile ……………… 45

VALQUA No.VF-30 / VF-35E▼Gasket Paste ……………………………………… 26▼Ceramic Fiber Textile ……………………………… 46

VALQUA No.5 / 5M / 6 / 6M / SEALP / PSVOVALQUA No.101S / 102SF /102S / 105S /105SN /112S / 112SN

Semi-Metallic Gasket

Related Product

VALQUATEX/
Rubber SheetPaste

VALQUA No.101G / 102G / 105G / 105GF /112G / 112GA / 112GC

Metal Semi-metal▼Expanded Graphite Sheet Gasket ……………… 23

Textile Products

VALQUATIGHTVALQUA No.7GS66A / 7GS62A / 7GS64N

Gasket Paste

VALQUA No.7020 / 7026 / 7010-EX / 7010 /7GP61 / 7GP61S / 7GP66 /7GP66S

Metal Serrated Gasket

High Performance
Compressed Non-asbestos Fluorocarbon Resin Expanded Graphite
Non-asbestos Sheet Fiber Sheet
Gasket
Sheet

INDEX

▼Spiral Wound Gasket ……………………………… 27

VALQUA No.8590 Series /6590 Series / 6590VC Series /7590 Series /M590L Series / M590 Series▼Gasket Cutter ……………………………………… 47▼Product No. Index ………………………………… 48

Textile Products

VALQUATIGHT Gasket

NONASUPER▼Metal Jacketed Gasket …………………………… 32

VALQUA No.N510 / N520 Series /N530 / N570 / N580 /N6510 / N6520 / N6580

Gasket Cutter

VALQUA No.8590TN

Precautions for Safe Handling
The product characteristics, selection examples and other information listed in this catalog are
representative of the performance of each product.
Since the equipment used and its applications, the actual usage conditions and others are diﬀerent
depending on the usage location, it is recommended to conduct a conﬁrmation test under the actual
operating condition before use.
Please contact us for more information on special applications.
How to Use the Product Safely
Please make sure to follow these instructions to use the product appropriately.
● Do not use the product for anything other than its intended use.
● When installing the product on piping, equipment etc., please refer to the instructions for each product before performing the work.
● If you are processing the product, please make sure to use a sharp cutting device.
● Please refrain from reusing the product after its initial use since it is not recommended.
● If you are storing the product, please store the product in a package to maintain the performance of the product.

Precautions When Handling VALFLON (ﬂuorocarbon resin products)● This product was not designed or manufactured for the purpose of use in medical devices which would be transplanted into thehuman body, or come into contact with bodily ﬂuids or body tissues. Please contact us in advance if you would like to use theproduct in this type of application.
● If you will be heating the product to temperatures over 200℃, please make sure to thoroughly discharge and ventilate the areaand not to breathe in the dissolved gas.
● When disposing the product, please follow the "Waste Management and Public Cleaning Law" and never incinerate the product.
*Please refer to MSDS (Material Safety Data Sheet) for precautions related to industrial safety and health.

Speciﬁc Products
Speciﬁc controls are required for products that fall under the following categories. Please let us know if you areordering any of these products.
● Components that are used in nuclear power plants and other related equipment that require special controls● Components that require a certiﬁcation to be used for gas equipment by the Japan Gas Appliances Inspection Association (JIA)● Components that comprise medical equipment and may cause bodily harm if a problem occurs● Components that require compliance with the Food Sanitation Act (Act No. 233 of 1947)● Safety components speciﬁed as "major overhaul set forth in Article 49(2) of the Road Transport Vehicle Act" under Article 3 of the
Enforcement Regulations for Road Transport Vehicle Act● Components that require speciﬁc controls due to their application in aerospace and defense

Recommended Tightening Stress
For low pressure gas seals, there are times when appropriate sealability cannot be obtained by the bolt load found by m and yspeciﬁed in Appendix G to JIS B 8265.
For minimum tightening stress, the recommended tightening stress that applies to the projected area (total contact cross section) of
the gasket is recommended. For minimum tightening force, please use the tightening force (Wm1 and Wm2) calculated from Appendix
G to JIS B 8265 or the tightening force calculated from the recommended tightening stress and the total contact cross section,
whichever has the greater tightening force.

1

Selection Criteria

Representative Product in Each Operating TemperatureＵ

Utility Application: For utility facilities pipes handling water, oil, water vapor, etc.

P

Process Application: Application for ﬂuid, with consideration of a wide range of ﬂuid suitability
Please refer to the contents after page 3 for details.

Various typesof gasket

№6500

Ｕ

100°C or below№6503
P.10,11Compressed
White Compressed
Non-asbestos Fiber Sheet Non-asbestos Fiber Sheet

№7020

P

200°C or below

P.15

VALQUALON№UF300P

260°C or below№MF300P.7,8

Ｕ

300°C or below

UNIVERSAL
HYPER

BRIGHT
HYPER№GF300№SF300№UF300№MF300
P.7,8

BLACK
HYPER

400°C or below

Ｕ

P

WHITE
HYPER

UNIVERSAL
HYPER

BRIGHT
HYPER№VF-35E

P.23

When the sealing
width is narrow№6540ＨVALQUAFOIL

450°C or below

Ｕ

P

P.35

№6596

P.28

KAMMPROFILE19
Lined MICATIGHT

BLACKTIGHT

№8596

Ｕ

500°C or below

P.27

CLEANTIGHT

750°C or below

Ｕ

P№M596L
P.28
Lined
MICATIGHT

2

Gasket Selection Example with Respect to Fluid, Temperature and Pressure

Selection Criteria■ Selection Procedure ■Based on the sealing-target ﬂuid and design conditions (pressure, temperature), please conﬁrm the applicable
category from the selection chart, and verify the recommended gasket and usable gaskets in its category.
Fluids are categorized as below.

① Water, hot water, water vapor② Crude oil, alcohol, animal and vegetable oils, heat transfer oil③ General solvent, weak acid, weak alkali④ Strong acid, strong alkali⑤ Air, nitrogen gas, inert gas⑥ Exhaust gas⑦ Inﬂammable gas⑧ Toxic gas⑨ Oxygen⑩ Extremely low temperature ﬂuid

■ Note ■The selection list shown below indicates the usable temperature and pressure range of each gasket with respect tovarious ﬂuids, and it does not indicate the maximum usable temperature and pressure for each gasket.
The recommended gasket is a representative gasket for each ﬂuid, temperature and pressure condition, and not allof the other usable gaskets are listed.
There are cases where a recommended gasket and usable gasket are diﬀerent; therefore, please contact us for more
information.
The temperature for each pressure shall be: from -30°
C to the stated temperature for ① to ⑨, and from the statedtemperature to -30°
C for ⑩.

①Water, Hot Water, SteamPoint of View : There is no hardening with High Performance Non-asbestos Sheet Gaskets, and they are easy to use.
Point
: The Economical Compressed Non-asbestos Fiber Sheet hardens at a temperature of 100°
C or above; therefore,
attention is needed for tightening control.
Temperature
0
(℃)
50

0.5

300

0.5

260

1

2

5

10

20 30

3.5

100

3.0

Recommended Gasket(VALQUA No.)

Other Usable Gasket(VALQUA No.)

2010
Synthetic Rubber Sheet Gasket

6500

GF300
High PerformanceNon-asbestos
Sheet Gasket

2.8

200

600

3

Pressure (MPa)
0.5

10.7

450

16.9

600

20

SF300 (For white)
MF300 (For white)

SF300 (For white),
MF300 (For white),6502 (Up to 2MPa)
6500
6503 (For white), 6500A (For Stainless Flange)
Compressed Non-asbestos Fiber Sheet Gasket
6503AC (For Stainless Flange)
M596L
550
Spiral Wound Gasket
6596
8596
Spiral Wound Gasket
550
─
Ring Joint Gasket

Page
Recommended

Others

43

10

8
7
8，10
10

10，11
37

28
27
37

─

②Crude oil, Alcohol, Animal & vegetable oil, Heat transfer oil, etc.
Point of View : Except for some ﬂuids, ﬂuid suitability is not a concern.
Point: The Economical Compressed Non-asbestos Fiber Sheet hardens at a temperature of 100°C or above; therefore, attention is needed for tightening control.
Temperature
0
(℃)
300

Pressure (MPa)
0.5

1

2

5

10

20 30

0.5

260

2.8

200

3.0

100

3.0

Other Usable Gasket(VALQUA No.)

GF300
High PerformanceNon-asbestos Sheet Gasket

SF300 (For white)
MF300 (For white)

Page
Recommended

10.7

450（1）

16.9

600

20

6500
Compressed Non-asbestos Fiber Sheet Gasket
M596L
Spiral Wound Gasket
6596
Spiral Wound Gasket
550
Ring Joint Gasket

6503 (For white),6502

Others87SF300 (For white)
MF300 (For white), 7020 (Up to 1.5MPa)

600（1）

Note (1)

Recommended Gasket(VALQUA No.)

8，15
10

10，11

550

37
28

8596L
─

29
37

─

Excluding HTS. Please let us know if you are using HTS.

③General solvent, Weak acid, Weak alkali, etc.
Point of View : PTFE-based and graphite-based gaskets with excellent chemical resistance are mainly selected.
Point: The High Performance Non-asbestos Sheet Gasket can be used even at 260°
C.
Temperature
0(℃)

Pressure (MPa)
0.5

1

260

2

5

10

20 30

1.2

50

2.0

100

2.0

200

1.5

100

4.0

450

16.9

Recommended Gasket(VALQUA No.)

Other Usable Gasket(VALQUA No.)

GF300
High PerformanceNon-asbestos Sheet Gasket

Page
Recommended

Others

SF300 (For white)
MF300 (For white), UF300

77，8N7030 (S)VALFLON Envelope Gasket

N7030 (N) (Up to 1.5MPa)

19

19

7020
Fluorocarbon Resin
Sheet Gasket

7026

15

15

6596
Spiral Wound Gasket

M596L

28

29

④Strong Acid, Strong Alkali
Point of View : PTFE-based gaskets with excellent chemical resistance are mainly selected.
Point: UF300 can be used for both high temperature strong acid and strong alkali.
Temperature
0
(℃)
260
50
200
100
300
150

Pressure (MPa)
0.5

1

2

5

10

20 30

1.2
2.0
1.5
4.0
8.5
20

Recommended Gasket(VALQUA No.)Acid
AlkaliOther Usable Gasket(VALQUA No.)

UF300
High PerformanceNon-asbestos Sheet Gasket

Page
Recommended

Others

MF300 (For white)

7

8

7026
7020
Fluorocarbon Resin Fluorocarbon Resin
Sheet Gasket
Sheet Gasket

―

15

―

7596
Spiral Wound Gasket

6596

28

28

4

⑤Air, Nitrogen Gas, Inert Gas, etc.
Point of View : A Sheet Gasket is selected for utility pipes, and a Spiral Wound Gasket is selected for handling high pressure.
Pressure (MPa)Temperature
0
(℃)

0.5

1

260

2

5

10

20 30

1.2

50

2.0

100

1.0

750

2.9

450

16.9

Recommended Gasket(VALQUA No.)

Other Usable Gasket(VALQUA No.)

GF300
High PerformanceNon-asbestos Sheet Gasket

Page
Recommended

Others

SF300 (For white), UF300、
MF300 (For white)

77，86503 (For white),
6500、N7030

1011，10，19―28―

M596L、8596L

28

28，29

6502
Compressed Non-asbestos Fiber Sheet Gasket
M596L
Spiral Wound Gasket
6596
Spiral Wound Gasket⑥ Exhaust Gas
Point of View : A Sheet Gasket and Semi-Metallic Gasket are used separately depending on the leakage allowance.
Point: A Rubber-coated Fabric Gasket can be used in areas where micro-pressure and a few leaks are acceptable.
Pressure (MPa)Temperature
0
(℃)

0.5

800

0.05

300

0.1

1

2

10

20 30

Other Usable Gasket(VALQUA No.)

1.2

50

2.0

100

1.0
0.35

35

5.17

Page
Recommended

Others

N520

43

32

N314，N520

43

43，32

GF300
High PerformanceNon-asbestos Sheet Gasket

SF300 (For white), UF300，
MF300 (For white)

7

7，8

6502
Compressed Non-asbestos Fiber Sheet Gasket

6503 (For white)，6500

10

11，10

N520
Metal Jacketed Gasket

M596L (Up to 750℃)

32

28

N314
Rubber Coated Fabric Gasket
N214
Rubber Coated Fabric

260

816

5

Recommended Gasket(VALQUA No.)

⑦Inﬂammable Gas
Point of View : Gaskets with high gas sealing performance are mainly selected.
Point: A PTFE-based Sheet Gasket that is high in gas sealing performance or a Spiral Wound Gasket is recommended.
Temperature
0(℃)

Pressure (MPa)
0.5

1

260

2

5

10

20 30

1.0

100

2.5

450

6.7

Recommended Gasket(VALQUA No.)

Other Usable Gasket(VALQUA No.)

GF300
High Performance Non-asbestos Sheet Gasket
7020
Fluorocarbon Resin Sheet Gasket
6596
Spiral Wound Gasket

Page
Recommended

Others

SF300 (For white),UF300，
MF300 (For white)

7

8

―

15

―

8596L

28

29

⑧ Toxic Gas
Point of View : Gaskets with high gas sealing performance are mainly selected.
Point: When considering reaction products, a PTFE-based Gasket is selected.
Temperature
0
(℃)
100
450
300

5

Pressure (MPa)
0.5

1

2

5

10

2.5
6.7
8.5

20 30

Recommended Gasket(VALQUA No.)
7020
Fluorocarbon Resin Sheet Gasket
6596
Spiral Wound Gasket
7596
Spiral Wound Gasket

Other Usable Gasket(VALQUA No.)

Page
Recommended

Others

7026

15

15

8596L

28

29

8596L，6540H

28

29，35

⑨Oxygen
Point of View : Gaskets using ﬂuororesin, which is a non-combustible resin, are selected.
Point: If paste is used, the new VALFLON paste is recommended when the temperature is 100°
C or below.
Temperature
0(℃)

Pressure (MPa)
0.5

1

200

2

5

10

20 30

1.0

ー200
〜 ー30
ー30
〜 100

Recommended Gasket(VALQUA No.)

Other Usable Gasket(VALQUA No.)

SF300
High Performance Non-asbestos Sheet Gasket

UF300，MF300，7596

7020
Fluorocarbon Resin
Sheet Gasket

1.0
2.5

300

8.5

ー200
〜 ー30

SF300 (For white)，UF300，
MF300 (For white)，7596

7596
Spiral Wound Gasket

10

Page
Recommended

Others

8

8，28
8，28

15

―

―

540

35
28

―

―

⑩Extremely low temperature ﬂuid
Point of View : Expanded graphite that does not become brittle material even at extremely low temperatures is selected.
Point: The High Performance Non-asbestos Sheet Gasket can be used up to about -200°
C.
Temperature
0(℃)

Pressure (MPa)
0.5

ー200
ー240
ー270

1

2

5

10

1.0
2.0
10

20 30

Recommended Gasket(VALQUA No.)
MF300
High Performance Non-asbestos Sheet Gasket
VF-35E
Expanded Graphite Sheet Gasket
6596VC
Spiral Wound Gasket

Other Usable Gasket(VALQUA No.)

Page
Recommended

Others

VF-35E，7020

8

23，15

6596VC，7596

23

7596 (Up to -260℃)

28

28■ Other Items that Shall be Considered When Making a Selection ■Gasket tightening stress
Gasket dimensions
Combination of gasket and ﬂange face
Flange face surface roughness
Precautions for various gaskets■ Fluids that Require Attention When Making a Selection ■Oxygen and gas
susceptible to burning

Gaskets using ﬂammable materials shall be avoided, and the PTFE ﬁller Spiral Wound Gasket,
PTFE-based Gasket, Copper-made Jacket Gasket and Metallic Flat Gasket are recommended.

Polymerizable monomers

There are occasions when polymerizable monomer such as a styrene monomer and vinyl
chloride monomer cannot use the Compressed Non-asbestos Fiber Sheet or PTFE-based
Gasket. Please select the Spiral Wound Gasket with inner and outer rings and the Metallic
Gasket.

Fluids that include slurry Soft gaskets could get damaged or leak due to erosion. Please select the Spiral Wound Gasket
with inner and outer rings and the Metallic Gasket.
Heat transfer oil

The Compressed Non-asbestos Fiber Sheet could leak due to a deteriorated rubber binder.
Furthermore, due to its high permeability, the Spiral Wound Gasket with inorganic paper
ﬁller could leak if used for years. Please select the Sheet Gasket with expanded graphite or
Spiral Wound Gasket with expanded graphite ﬁller. Please note that HTS cannot be usedsince it reacts with expanded graphite. Please contact us for more information.

Radioactive Fluid

PTFE is not recommended since it is sensitive to radiation. Expanded graphite has 1x106Gy
radiation resistance. Please conﬁrm the radiation level and make a selection.

6

High PerformanceNon-asbestos SheetHigh PerformanceNon-asbestos Sheet Gasket

High Performance Non-asbestos Sheet
VALQUA No.UF300/GF300/SF300/MF300

High Performance Non-asbestos Sheet Gasket
The product is superior in its creep relaxation characteristics as compared to the Compressed Non-asbestos Fiber
Sheet. These gaskets are easy to handle and do not harden easily with excellent chemical resistance and heat
resistance because they use PTFE as binders. Since these gaskets do not contain any rubber, deterioration with age
and hardening does not occur and retightening is possible. Furthermore, this gasket does not easily stick to ﬂanges.
UNIVERSALHYPER

UF300

VALQUA No.
FeaturesThis is a Sheet Gasket that can be used for the widest variety of ﬂuids, and diﬀerent applications are not required foracid or alkali ﬂuids.
It is eﬀective for promoting gasket integration at a plant
where both alkali and acid lines exist.
This is a product that possesses high-temperature reliability equal to that of other High-performance Non-asbestos
Sheet Gaskets (GF300, for example), thereby possessing
both chemical resistance and high-temperature reliability.

Suitable fluids

Water, seawater, hot water, steam, air, acid (includes strong acid), alkali (includes strong
alkali), salt aqueous solution, oils, alcohol, aliphatic solvent and its vapor, and various typesof gas, etc.

Unsuitable fluids

Polymerizable monomer, toxic gas

Applications

Joint sections of cover ﬂanges and nozzles and the like for pipe ﬂanges, valve bonnets,
towers & tanks, ovens, pressure vessels and heat exchangers used in various factories
including power stations, oil reﬁneries, steel plants and shipyards

Main component

PTFE, silicon carbide

Color / Print

Gray / Blue

BLACKHYPERGF300

VALQUA No.
FeaturesThis is a general-purpose type Gasket that is ideal for utility lines
using steam and oil.

Unsuitable fluids

Oxidizing acid, substance susceptible to burn such as oxygen,
polymerizable monomer, strong alkali, toxic gas

Applications

Joint sections of cover ﬂanges and nozzles and the like for pipe
ﬂanges, valve bonnets, towers & tanks, ovens, pressure vessels
and heat exchangers used in various factories including power
stations, oil reﬁneries, steel plants and shipyards

Main component

PTFE, silica, graphite

Color / Print

Dark gray / Black

Conforms to the Food Sanitation Act and standards for food and additives

7

High PerformanceNon-asbestos Sheet

WHITEHYPER

SF300

VALQUA No.
Features

WHITEHYPER can provide the same performance as No.GF300
and because it has no black material it is good for using when
white lines are preferable and has a wide range of other applications.

Unsuitable fluids

Polymerizable monomer and toxic gas

Applications

Joint sections of cover ﬂanges and nozzles and the like for pipe
ﬂanges, valve bonnets, towers & tanks, ovens, pressure vessels
and heat exchangers used in various factories including power
stations, oil reﬁneries, steel plants and shipyards

Main component

PTFE, silica

Color / Print

Oﬀ-white / Green

BRIGHTHYPER

MF300

VALQUA No.
FeaturesThis gasket has more excellent chemical resistance than GF300
and SF300, and it can be used for both acid and alkaline applications. This product is solid white; thus, it is ideal for lines incompatible with contamination. The product has long-term stability
at high temperatures, similar to other high performance nonasbestos sheets.

Unsuitable fluids

Polymerizable monomer and toxic gas

Applications

Joint sections of cover ﬂanges and nozzles and the like for pipe
ﬂanges, valve bonnets, towers & tanks, ovens, pressure vessels
and heat exchangers used in various factories including power
stations, oil reﬁneries, steel plants and shipyards

Main component

PTFE, alumina

Color / Print

White / None

Design data
■ Dimensions ■■ Allowable ranges ■VALQUA No.
UF300/GF300
SF300/MF300
RemarkTemperature (℃)−200〜300

Pressure (MPa)

VALQUA No.

3.5

UF300

Temperature and pressure classiﬁcations show individual
service limits.

GF300

SF300
MF300

Thickness (mm)Size (mm)1.01270×1270

1.5，2.0，3.0

1500×1500

1.0，1.51270×1270

2.0，3.0

1500×1500

1.5

1000×1000

2.0，3.01270×1270

1.5，3.01270×1270■ Design Criteria ■The values for Compressed Non-asbestos Fiber Sheets deﬁned in Appendix G to JIS B 8265 can be applied to m and y values of High Performance Non-asbestos Sheets.
（1）

VALQUA No.

UF300/GF300
SF300/MF300
Note (1)Minimum design seating stress Recommended tightening stress（MPa）“ｙ” (N/mm2)
LiquidGas

Thickness (mm)Gasket factor“m”

3.0

2.00

11.0

1.5

2.75

25.5

1.0

3.50

44.8

25.5

35.0

The recommended tightening stress is the pressure required under standard conditions without consideration to the endforce due to internal
ﬂuid. It is the stress on the contact area of the gasket.

Conforms to the Food Sanitation Act and standards for food and additives

8

High PerformanceNon-asbestos Sheet■ Allowable ranges per ﬂuid ■4① Water based ﬂuid
② Oil based ﬂuid①
Pressure (MPa)3③ Solvent and corrosive ﬂuid
④ Air, nitrogen gas, inert gas, etc.

②

⑤ Inflammable gas(1)2⑥ Low temperature ﬂuid③④
Note (1)1⑥

Application to toxic gas is not recommended.

⑤

0−250 −200 −150 −100 −50

0

50

100

150

200

260
250
300

350

Temperature (℃)■ Stress strain Characteristics of High-performance Non-asbestos Sheet (Dimension of test piece：JIS 10K 25A t =1.5mm)
40

No.UF300

35

No.GF300

Stress (MPa)30

No.SF300

25

No.MF300

20
15
10
5
0

0.0

2.0

4.0

6.0

Strain (％)■ Comparison of high temperature hardening properties ■Cylinder diameter(multiples of gasket thickness)

140

CylinderCylinder diameter

No.UF300
No.GF300
No.SF300
No.MF300

120
100
80

No.6502

60
40

Test sample sheet (t 1.5mm)

200Normal temp.

100℃

200℃

Heating temperature (heating time: 24h)

9

250℃

A heated sheet is wound around a cylinder with a speciﬁed diameter to checkthe occurrences of "cracks".

Compressed Non-asbestos
Fiber Sheet Gasket

Compressed Non-asbestos Fiber Sheet
VALQUA No. 6500/6500AC/6502/6503/6503AC

Compressed Non-asbestos Fiber Sheet for general use
VALQUA No.

6500

Features

These products are suitable for use as general-purpose Gaskets
for pipe ﬂanges in general utility lines, such as water and oil andequipment in various industries.
The adaptability of these sheets to water apparatus according to
JIS S 3200-7 has been conﬁrmed.

Unsuitable fluids

Strong oxidizing acid, strong alkali, various solvents, inﬂammablegas, gas susceptible to burning, toxic gas, etc.

Applications

Joint areas of steam lines, pipe ﬂanges, valve bonnets and otherequipment used in oil reﬁneries and chemical industries

Main component

NBR, aramid ﬁber, mineral wool, inorganic ﬁllers

Color / Print

Blue / Black

Compressed Non-asbestos
Fiber Sheet

Compressed Non-asbestos Fiber Sheets are sheet type gasket materials, where a special rubber binder and a small
amount of ﬁller material are mixed with organic and inorganic ﬁbers, and rolled and vulcanized.

Anti-corrosion Compressed Non-asbestos Fiber Sheet
VALQUA No.

6500AC

Features

With reduced amounts of leachable chloride, these Compressed
Fiber Sheets have corrosion suppression eﬀect when stainlesssteel ﬂanges are used for water or water solutions. Surface ﬁnishing reduces sticking to the ﬂange.

Unsuitable fluids

Strong acid, strong alkali, various solvents, inﬂammable gas, gas
susceptible to burn and toxic gas

Applications

Stainless steel pipe ﬂanges, valve bonnets and joints of various
equipment that require corrosion resistance in various industries

Main component

NBR, aramid ﬁber, mineral wool, inorganic ﬁllers

Color / Print

Blue / Orange

BLACKSUPERVALQUA No.

6502

FeaturesExcellent heat resistance when compared with 6500. It may be
used for a wide variety of purposes.

Unsuitable fluids

Strong acid, strong alkali, various solvents, inﬂammable gas, gas
susceptible to burn and toxic gas
NBR, aramid ﬁber, carbon ﬁber, mineral wool, inorganic ﬁllers

Applications

Joint areas of steam lines, pipe ﬂanges, valve bonnets and otherequipment used in oil reﬁneries and chemical industries

Main component

NBR, aramid ﬁber, carbon ﬁber, mineral wool, inorganic ﬁllers

Color / Print

Gray / Black

10

White Compressed Non-asbestos Fiber Sheet

Compressed Non-asbestos
Fiber Sheet

VALQUA No.

6503

Features

Since black components are removed in the Compressed Fiber
Sheet, these gaskets are suitable to be used for applications
where inclusion of black foreign substances into the ﬂuid should
be avoided.

Unsuitable fluids

Strong acid, strong alkali, various solvents, inﬂammable gas, gas
susceptible to burn and toxic gas

Applications

Applications should be avoided in which black foreign substances are included into process ﬂuids, such as in petrochemicalindustry

Main component

NBR, aramid ﬁber, mineral wool, inorganic ﬁllers

Color / Print

White / Green

Anti-corrosion white Compressed Non-asbestos Fiber Sheet
VALQUA No.

6503AC

Features

With reduced amount of leachable chloride, these white Compressed Fiber Sheets have corrosion suppression eﬀect on stainless steel ﬂanges.
Surface ﬁnishing reduces sticking to the ﬂange.

Unsuitable fluids

Strong acid, strong alkali, various solvents, inﬂammable gas, gas
susceptible to burn and toxic gas

Applications

Pipe ﬂanges, valve bonnets and other equipment used in various
industries requiring corrosion resistance for white applications

Main component

NBR, aramid ﬁber, mineral wool, inorganic ﬁllers

Color / Print

White / Orange

Design data
■ Dimensions ■■ Allowable ranges ■VALQUA No.

Temperature(℃) (1)6500/6500AC
6502/6503/6503AC

Pressure (MPa)
Water
based

Oil
based(2)Gas

ー50〜183

3.0

3.0

1.0

ー50〜214

3.0

3.0

1.0

For service conditions exceeding 100℃, please refer to theprecautions listed on page 12.
(2) Regarding oil gas, solvent and corrosive ﬂuid, separate
consultation is required.
Remark Temperature and pressure classiﬁcations show individual
service limits.

VALQUA No.

Thickness (mm)Size (mm)1270×1270

6500/6502/6503

Notes (1)1270×3810
0.4（6500 only）

2540×3810

0.5，0.8，1.0

3048×3810

1.5，2.0，3.0

1270×1270

6500AC/6503AC

1270×3810
2540×3810■ Design Criteria ■The values deﬁned in Appendix G to JIS B 8265 can be applied to the m and y values of the Compressed Non-asbestos Fiber Sheet.
Thickness (mm)Gasket factor“m”

6500/6500AC
6502
6503/6503AC

3.0

2.00

11.0

1.5

2.75

25.5

1.0

3.50

44.8

Note (1)11(1)
Minimum design seating stress Recommended tightening stress (MPa)“ｙ” (N/mm2)
LiquidGas

VALQUA No.

25.5

40.0

The recommended tightening stress is the pressure required under standard conditions without consideration to the endforce due to internal
ﬂuid. It is the stress on the contact area of the gasket.

■ Allowable ranges per ﬂuid ■【6502/6503/6503AC】① Water based ﬂuid
② Oil based ﬂuid(1)3（Not applicable） ③ Solvent

3

1④ Air, nitrogen gas,

①②

2

1

inert gas, etc.

Refer to Note

Pressure (MPa)①②2Refer to Note

Pressure (MPa)

Corrosive ﬂuid(2)Compressed Non-asbestos
Fiber Sheet【6500/6500AC】（Not applicable） ⑤ Inflammable gas,
toxic gas, etc.(2)（Not applicable） ⑥ Low temperature
ﬂuid(2)④④0−100 −50

0

50

100

150

183
200

Notes (1)0250−100 −50

Temperature (℃)

0

50

100

150

214
200
250

Temperature (℃)(2)

Oil gas is not included.
Please contact us formore information.
Applications to solventand corrosive ﬂuid,
inﬂammable gas, toxic
gas, and low temperature ﬂuids are notrecommended.

▼ NoteIf No. 6500, No. 6500AC, No. 6502, No. 6503 or No. 6503AC are used at a temperature of 100°
C or above, there
is a possibility that the gasket could harden and crack; therefore, please follow the precautions listed below
when using the product.
① Gasket thickness should be 1.5 mm or less.
② Gasket paste (SEALPASTE etc.) should be used.
③ Tightening stress should be 30 MPa or higher.
④ These gaskets should be used in places unlikely to bear piping load, or in places that may be easily
replaced.
⑤ Whenever possible, use ring gaskets. Full face gaskets have more surface area, requiring additional
compressive load on the gasket.

■ Stress strain Characteristics of Compressed Non-asbestos Fiber Sheet (Dimension of test piece：JIS 10K 25A t =1.5mm) ■Stress (MPa)40
35No.6500

30

No.6502No.6503

25
20
15
10
5
0

0.0

2.0

4.0

6.0

8.0

10.0

12.0

Strain (％)

12

High Performance
Compressed Non-asbestos
Non-asbestos Sheet Fiber SheetHigh Performance Non-asbestos Sheet / Compressed Non-asbestos Fiber SheetSoft
GasketVALQUA No. UF300/GF300/SF300/MF300/6500/6502/6503■ Comparison of physical properties ■High Performance Non-asbestos Sheet

Compressed Non-asbestos Fiber Sheet

Item
No.UF300

No.GF300

No.SF300

No.MF300

No.6500

No.6502No.6503

1.5

3.0

1.5

3.0

1.5

3.0

1.5

3.0

1.5

3.0

1.5

3.0

1.5

3.0

Tensile strength (CD) (MPa) 12.0

14.6

12.4

10.9

16.0

15.8

12.0

14.1

17.0

15.3

13.1

12.5

19.2

18.1

Compressibility（34.3MPa） (%)

4

4

5

4

5

6

5

4

10

10

9

10

9

6

Recovery（34.3MPa） (%)

49

46

53

54

42

50

32

36

57

55

67

64

60

61

Flexibility (MD)(1)

＜2

＜2

＜2

＜2

＜2

＜2

＜2

＜2

9

9

11

12

10

10

(mm)

Thickness
Physical Properties(kg/m3) 2576 2557 2315 2262 2319 2280 2910 2839 1810 1813 1761 1759 1803 1857

Density

Oil resistance〈 IRM903 OIL 150℃×5h 〉
Tensile strength loss

(%)

0.6

0.2

1.0

7.6

3.8

5.1

1.5

5.9

16.7

6.3

9.2

9.6

13.0

0.0

Thickness increase

(%)

0.0

0.0

0.2

0.1

0.0

0.0

0.2

0.2

2.2

1.2

1.3

1.0

2.1

0.6

Weight increase

(%)

0.4

0.2

0.5

0.6

0.5

0.7

1.1

1.4

3.9

3.2

4.4

3.0

4.2

1.7

Fuel oil resistance〈 JIS Fuel oil B RT×5h 〉
Thickness increase

(%)

0.0

0.3

0.4

0.3

0.4

0.1

0.2

0.5

5.6

2.8

4.3

2.6

5.4

2.3

Weight increase

(%)

1.0

1.2

0.9

1.2

0.9

1.3

0.9

1.8

5.6

4.0

6.7

6.0

7.0

3.2

Creep relaxation〈 JIS R 3453 Tightening stress 20.6MPa 〉
100℃×22h

20.3

44.5

16.2

37.0

16.1

42.7

16.9

30.2

27.5

47.0

23.5

37.8

27.3

45.0

200℃×22h

44.7

71.9

35.3

65.8

40.5

68.8

35.8

55.0

52.0

78.8

41.1

65.5

43.6

60.5

Sealability〈JIS 10K50A, Internal pressure He1.0MPa, Tightening stress 25.5MPa, Thickness 1.5mm〉(Pa・m3/s)
With paste

1.7×10-4
or below

1.7×10-4
or below

1.7×10-4
or below

1.7×10-4
or below(atm・cc/min.) 0.1 or below 0.1 or below 0.1 or below 0.1 or below(Pa・m3/s)

―

―

―

―

(atm・cc/min.)

―

―

―

―

Without paste

1.4×10-3

1.9×10-4

1.2×10-3

0.83

0.11

0.74

1.7×10-4
or below

1.7×10-4
or below

1.7×10-4
or below

0.1 or below 0.1 or below 0.1 or below

Note (1) Flexibility is in accordance with JIS R 3453 6. 2. 5. Please refer to “Comparison of high temperature hardening properties” listed on page 9.
Remark All the above physical properties are measurement examples, and not regulatory values.

13

The following summarizes the points to be observed in the design, storage and installation, in order to ensure proper use of
the Sheet Gasket. If used under conditions exceeding 100℃, Compressed Non-asbestos Fiber Sheet Gasket that use rubber
may break due to hardening.
▼ Notes to be observed in design
1. Determine the number and size of bolts and gasket dimensions to provide gaskets with suﬃcient tightening stress, andalso check the ﬂange construction and bolt arrangement toensure uniform distribution of the tightening stress.
2. Surface ﬁnish of the ﬂange shall be about 6.3 Ra (reference :25 S). Excessive smooth ﬁnish may cause slippage on thegasket, leading to crush.
3. Determine the construction, material and dimensions so as
to prevent warpage or bowing of the ﬂange at the time of
application of internal pressure.
4. Consideration shall be given in design to prevent applicationof excessive thermal stress or repetitive bending stress on
the joints.
5. Piping design shall not allow accumulation of drain or scaleat the ﬂange sections.
6. Consideration shall be given to prevent transmission of vibration to the joints.

▼ Notes to be observed in storage
1. Store these joint sheets in a cool and dark place not subject
to direct sunshine, fresh air or ozone.
2. Storage selected shall be in a clean environment, free fromdust as well as from high temperature & high humidity andcorrosive atmosphere.
3. If hanged on nails or the like, gaskets may suﬀer breakage orpermanent deformation, so that, as far as practicable, theyshould be put in a can or wrapped in a polyethylene bag andstored in a paper box.
4. Large sized gaskets shall be put between larger plates without rolling and placed horizontal for storage.

▼ Notes to be observed before installation
1. Ensure perpendicularity of the ﬂange and the pipe.
2. Ensure the shaft alignment of the mating ﬂanges.
3. Check for any deformation of ﬂanges.

4. When changing only gaskets for the existing equipment or ata piping joint, clean the junctions and check for any damage,and repair if required.
5. Remove the rust at the ﬂange surface, and repair any dents
and dings.
6. Pay attention not to give damage to the gaskets during storage up to installation, or during installation work.

High Performance
Compressed Non-asbestos
Non-asbestos Sheet Fiber Sheet■ Notes to be observed in design and usage ■▼ Notes to be observed during installation work
1. When installing gas seals, refer to the following "Countermeasures against permeation leakage".
2. Install the gaskets in a clean environment so as to prevent
entry of foreign substances between the gaskets and theﬂanges.
3. Flange bolts shall be gradually tightened each time, andrepeat this process 4 to 5 times, so as to ﬁnally ensure
uniform tightening.
4. When tightening, pay attention to prevent the occurrence ofcrush.
5. In particular, when using gaskets of 150 Lb, 1B or smaller, or
those of smaller gasket width, care shall be given as gasket
stress is likely to be excessive.
6. At the time of load up or restarting, check for any loose bolts.
7. If retightening of gaskets that have already once experienced
leakage fails in preventing leakage, replace them with newones.
8. Please note that the Compressed Non-asbestos Fiber Sheetmay harden if used in an environment at a temperature ofover 100°
C, and caution is required. Please refer to theprecautions listed on page 12 and perform the appropriate
initial tightening control to avoid retightening after being
used at a high temperature. If retightening is necessary, it
should be performed within 24 hours from the start of theheating operation, while material hardening is not signiﬁcantyet.

■ Countermeasures against permeation leakage ■Since permeation leakage also occurs in Sheet Gasket as in the case of conventional asbestos joints, the following points shallbe observed for gas seals:▼ For High Performance Non-asbestos Sheet(No.UF300/GF300/SF300/MF300)▼ In the Case of a Compressed Non-asbestos Fiber Sheet(No.6500/6500AC/6502/6503/6503AC)

1. Apply gasket paste to the contact surface of the gasket andthe ﬂange and on the cut surface of the inner diameter ofgasket.
2. Maintain the tightening stress to be around 35 MPa. Also use
ring gaskets instead of full-face gaskets, so as to ensure
proper tightening stress.
3. Use gaskets with a minimum thickness as much as possible(1.5 mm or less).
4. When using gasket paste, please use "NEW VALFLON Paste".
Speciﬁcally, No. 6 and No. 6M are not recommended due totheir poor compatibility with the High-performanceNon-asbestos Sheet Gasket.

1．Apply gasket paste on the cut surface of the gasket innerdiameter side. Application of gasket paste on the contact
surface between the gasket and the ﬂange is likely to cause
crush, so that attention is required in tightening, which will
also minimize the amount of gasket paste.
2. Please keep the tightening stress at around 40MPa. Also use
ring gaskets instead of full-face gaskets, so as to ensure
proper tightening stress.
3. Use gaskets with a minimum thickness as much as possible(1.5 mm or less).

14

Fluorocarbon Resin
Sheet Gasket

VALFLON Sheet Gasket
VALQUA No. 7020/7026/7010-EX/7010/7GP61/7GP61S/7GP66/7GP66S

These are sheet gaskets made of VALFLON (PTFE) with excellent chemical resistant and non-stick properties.
(VALFLON is a registered trademark in Japan for its ﬂuorocarbon resin products of NIPPON VALQUA.)VALQUALON Gasket / Black VALQUALON Gasket
VALQUA No.

Fluorocarbon Resin
VALFLON Sheet Gasket
GasketFeatures

Unsuitable fluids
Main component
Color

VALQUA No.
Features

Unsuitable fluids
Main component
Color

7020
In order to improve the cold ﬂow (creep phenomenon), which isa weakness of PTFE, inorganic ﬁller material is mixed into thesegaskets. Provided with heat resistance, chemicals resistance, andanti-cold ﬂow property, they are suited for lines handling various
chemicals (high concentrated hot sulfuric acid, hot nitric acid,etc.).
Highly concentrated alkali such as sodium hydroxide, hydroﬂuoric acid,polymerizable monomer, etc.
PTFE, silica
Beige

7026
Similar to other companion products, No.7020, No.7026 gaskets haveexcellent heat resistance, chemicals resistance, and anti-cold ﬂow
properties, so that they are suited for lines handling various chemicals.
Oxidizing acids such as highly concentrated hot sulfuric acid andhot nitric acid, polymerizable monomer, etc.
PTFE, carbon
Black

New VALFLON Gasket / VALFLON Gasket
VALQUA No.
Features

Unsuitable fluids
Main component
Color

VALQUA No.
▲No.7010

FeaturesMain component
Color

7010-EX
No.7010-EX gaskets are made of "NEW VALFLON" material that has
improved creep phenomenon, while maintaining the PTFE's excellent heat resistance, chemicals resistance, and non-stick properties.
Thus, they have a long service life for heat cycles, contributing toextending the operating life of gaskets.
Polymerizable monomer, etc.
PTFE
White

7010
These gaskets are made by punching virgin PTFE sheet. As thesegaskets are liable to cause cold ﬂow, the gaskets should beinstalled in grooves or tongue and groove ﬂanges in principle.
PTFE
White

VALFON Soft Sheet

7GP61 (Sheet) / 7GP66 (Gasket)
VALQUA No. 7GP61S (Sheet) / 7GP66S (Gasket)
VALQUA No.

FeaturesMain component
Color

These highly ﬂexible sheets have a specially made mesh construction, while taking advantage of the PTFE's excellent chemicals resistance and heat resistance properties.
PTFE
White

Conforms to the Food Sanitation Act and standards for food and additives

15

Design data
■ Allowable ranges ■VALQUA No.

■ Dimensions ■Temperature (℃)

7020

ー200〜200

7026
7010（1）VALQUA No.

Pressure (MPa)1.0

ー50〜150ー240〜260

1000×1000
1270×1270

1.5，2.0，3.0

1270×1270

7010

1.0，1.5，2.0，3.0

Max. OD 1300

7010-EX

1.5，3.0

Max. OD 1100

7GP61/7GP61S

0.5，1.0，1.5

1500×1500

7GP66/7GP66S

2.0，3.0

Max. OD 1450

2.0

Note(1) For No.7010, grooved ﬂanges should be used in principle.
Remark Temperature and pressure show individual service limits.

2.0，3.07026■ Design Criteria ■Minimum design seating stress Recommended tightening stress (MPa)(1)“ｙ” (N/mm2)
LiquidGas

Thickness (mm)Gasket factor“m”

1.0

3.5

24.5

7020

1.5

3.2

22.5

7026

2.0

3.0

VALQUA No.

3.0

2.5

1.0，1.5

3.0

2.0

2.5

3.0

2.0

0.5〜3.0

2.57010（2）7010-EX
7GP66/7GP66S

20.0

24.5

10.0

15.0

20.0

24.5

19.6
19.6
14.7
19.6

Fluorocarbon Resin VALFLON Sheet Gasket
Gasket7010-EX
7GP66/7GP66S

Size (mm)1.0，1.57020

4.0

ー50〜100

Nominal thickness (mm)Notes (1)The recommended tightening stress is the pressure required under standard conditions without consideration to the endforce due to internal ﬂuid. It is the stress on the contact area of the gasket.
(2) For No.7010, grooved ﬂanges should be used in principle.
Remark The m, y values of VALFLON Gaskets are the same as those of ﬂuororesin gaskets speciﬁed in JIS B 2206. However, the values listed for No.
7010, No. 7010-EX, No. 7GP66 and No. 7GP66S are our recommendations.

■ Characteristic Values of VALFLON Gaskets ■Items

7010-EX

7026

7020

7GP66

7010

RemarkThickness (mm)

1.5

3.0

1.5

3.0

1.5

3.0

1.5

3.0

1.5

3.0

Tensile strength (MPa)

15.6

15.8

24.2

23.2

26.4

24.2

30.2

27.3

24.0

18.4

Compressibility (34.3MPa)

4

5

4

5

20

12

19

12

69

71

―
JIS R 3453

Recovery (34.3MPa)

69

54

67

63

63

48

51

64

15

16

Density (kg/m3)

2330

2300

2070

2070

2210

2200

2170

2180

620

670

Creep relaxation

100℃×22h

37.2

55.0

42.8

60.8

63.7

79.6

75.9

88.4

51.9

68.3

( 20.6MPa)(%)

200℃×22h

66.7

81.0

79.3

85.5

86.0

90.8

92.4

97.3

59.3

75.3

Sealability(1) (Pa・m3/s)Without paste

1.7×10-4 or below 1.7×10-4 or below 1.7×10-4 or below 1.7×10-4 or below―
JIS R 3453

2.8×10-4―

Note (1) Sealability test criteria: JIS 10K50A, Internal pressure He 1.0MPa, Tightening stress 25.5Mpa, Thickness 1.5mm
Remark The above values are measurements, and not regulatory values.

■ Allowable ranges per ﬂuid ■【7020/7026】【7010-EX/7010】

1.5

2

7010

3

2

④⑤

7010-EX
Pressure (MPa)①②③

Pressure (MPa)

Pressure (MPa)4【7GP66/7GP66S】

1.0

①②③
④⑤

0.5

1

①②③
1

④

⑥

⑥
0
−200

−50
−100
0

0
100

Temperature (℃)① Water based ﬂuid
(1)

② Oil based ﬂuid

200

300

−100

0
−50

0

50

100

150

200

Temperature (℃)

−240
−200

−50
−100
0

260
100

200

300

Temperature (℃)③ Solvent and corrosive ﬂuid

⑤ Inflammable gas, toxic gas, etc.(1)④ Air, nitrogen gas, inert gas, etc.

⑥ Low temperature ﬂuid.(2)Notes (1) Application of 7GP66 or 7GP66S to inﬂammable gas or toxic gas is not recommended.
(2) Application of 7010-EX or 7010 to low temperature ﬂuids is not recommended.

16

CORDSEAL <Soft>

Fluorocarbon
Resin Gasket

VALQUA No. 7GS66A/7GS62A/7GS64NCORDSEAL <Soft> is a marshmallow shaped free-size sealing material,
which has been modiﬁed to be ﬂexible and very tough, while
maintaining the PTFE's excellent chemical resistance and heat resistanceproperties. Three types with diﬀerent cross sections are available: oval
type, ﬂat type, round type.

Fluorocarbon Resin
CORDSEAL <Soft>
Gasket■ Allowable ranges ■CORDSEAL <Soft> [oval type]

Temperature (℃)

VALQUA No.

7GS66A

String shaped product with an oval crosssection [string type] and adhesive toimprove workability.

ー240〜260

Pressure (MPa)

Gas

2.0

Liquid5.0

Remark Temperature and pressure show individual service limits.

■ Standard dimensions ■Nominal size <Width> (mm) Thickness (mm) Length (m)Cross section

3

1.5

30

6

3.0

15

9

4.0

8

12

5.0

16

6.0

20

5

CORDSEAL <Soft> [tape type]
VALQUA No.

7GS62A

Adhesive belt shaped product (1 to 3 mm
thick) with a ﬂat cross section [tape type].

■ Selection guidelines ■▼The smaller the cross section size, the higher the sealingpressure, in so far as the ﬂange surface is in good condition.
▼The widths after tightening of CORDSEAL <Soft>
No.7GS66A and No.7GS64N will be about 1.5 to 2.5 times
the nominal dimension. Thus, select the products with awidth about one half or less than the contact width of thegaskets to be used. The following table provides a measure
showing the relationship between the ﬂange nominal
dimension and the nominal dimension of the CORDSEAL<Soft> No.7GS66A:
Flange nominal
Dimension

〜500A

500〜
1000〜
1500A〜
1000A
1500A

Nominal dimension of
CORDSEAL <Soft>

3〜9

6〜12

9〜12

12〜20

■ Standard dimensions ■Nominal size <Width> (mm) Thickness (mm) Length (m)1.0Cross section

20,

30,

50

2.0
3.0

15
5

CORDSEAL <Soft> [rope type]
VALQUA No.

7GS64N

Non-adhesive rope shaped products witha round cross section [rope type].

■ Standard dimensions ■Nominal size <Width> (mm) Length (m)Cross section

2

40

4

20

6

10

8

7

10
12

17

5

■ Applications ■▼Gaskets for large diameter equipment which is liable tohave rough ﬁnished ﬂange surface, increased strain, or
insuﬃcient tightening force.
▼Gaskets for towers, tanks, ovens, heat exchangers andpressure vessels adopting FRP, glass lining, resin lining,rubber lining, ceramics or impervious graphite.
▼Gaskets for duct ﬂanges and pipe ﬂanges.
▼Gland packing for valves.

Conforms to the Food Sanitation Act and standards forfood and additives

VALFLON Sheet Gasket / Cord Seal <Soft>

Fluorocarbon
Resin Gasket

VALQUA No. 7020/7026/7010-EX/7010/7GP61/7GP61S/7GP66/7GP66S/7GS66A/7GS62A/7GS64N■ Stress strain characteristics of VALQUALON (No.7020/7026) ■■ Stress strain characteristics of VALFLON Soft Sheet (No.7GP66) ■<Dimension test piece：JIS 10K 25A>

<Dimension test piece：JIS 10K 25A>
40
No.7020
No.7026

t 1.5 mm
t 1.5 mm

t 3.0 mm
t 3.0 mm

20

30

0.5mm

3.5

0

16
Stress (MPa)

14
20

12
10
8
6

10

4
2
0
0

1

2

3

4

5

6

3.0

Strain (％)

2.5

2.0

1.5

1.0

0.5

Gasket thickness (mm)■ Notes to be observed in design and usage ■▼ Notes to be observed in design▼ Notes to be observed before installation

・Determine the number and size of bolts, and gasket dimen-

・Check the perpendicularity of the ﬂange and the pipe.

sions to provide gaskets with suﬃcient tightening stress. Also,

・Ensure the shaft alignment of the mating ﬂanges.

check the ﬂange construction and bolt arrangement to ensure

・Check for any deformation of ﬂanges.

uniform distribution of tightening stress.

・When changing only gaskets for the existing equipment or at

・Being liable to suﬀer cold ﬂow, these gaskets have to be usedin locations permitting tightening control including periodic
retightening. Since the gaskets are composed mainly ofthermoplastic PTFE, retightening shall not be performed under
hot temperature conditions, but under cold temperature
conditions after initial heating. For No.7010, grooved ﬂanges
should be used in principle.
・Determine the construction, material and dimensions so as toFluorocarbon Resin VALFLON Sheet Gasket
GasketCord Seal <Soft>Stress (MPa)Nominal thickness of gasket 3mm 2mm 1mm

18

a piping joint, clean the connecting section and check forany damage, and repair if required.
・Take oﬀ the rust at the ﬂange surface, and repair any dents
and dings.
・Pay attention not to damage the gaskets during storage or
during installation work.
・Dimensions of this product may change after fabrication due
to the characteristics of the raw material.

prevent warpage or bowing of the ﬂange at the time of
application of internal pressure.

▼ Notes to be observed during installation work

・Consideration shall be given in design to prevent application

・Install the gaskets in a clean environment so as to preventof excessive thermal stress or repetitive bending stress on theentry of foreign matters between the gaskets and thejoints.

ﬂanges.

・Piping design shall not allow accumulation of drain or scale atthe ﬂange section.
・Consideration shall be given to prevent transmission ofvibration to the joints.

・If gasket paste is to be used, apply a minimum amount of"NEW VALFLON Paste" uniformly. Also care shall be exercised
after application of paste, to prevent adhesion of dust andthe like.
・Flange bolts shall be gradually tightened each time, and▼ Notes to be observed in storage
・Store these products in a cool and dark place not subject todirect sunshine.
・Storage selected shall be in a clean environment, free fromdust as well as from high temperatures & high humidity andcorrosive atmosphere.

repeat this process 4 to 5 times, so as to ﬁnally ensure
uniform tightening.
・When tightening, pay attention to prevent the occurrence ofcrush.
・At the time of load up or restarting, be sure to carry out
retightening. Special attention is necessary, especially when・If hanged on nails or the like, gaskets may suﬀer breakage orusing gaskets of 150Lb1B or smaller, or those with a smaller

permanent deformation, so that, as far as practicable, they

diameter or smaller gasket width, since gasketʼs tightening

should be put in a can or wrapped in a polyethylene bag andstress is likely to be excessive.

stored in a paper box.
・Large sized gaskets shall be put between larger plates withoutrolling and placed horizontally for storage.

・If retightening of gaskets that have already once experienced
leakage, fails in preventing leakage, replace them with new
ones.

18

Fluorocarbon Resin
Envelope Gasket

VALFLON Envelope Gasket
VALQUA No. N7030/N7031/N7035

This is a VALFLON (PTFE) envelope gasket using the Compressed Non-asbestos Fiber Sheet or Expanded Graphite
Sheet as core material.
Three types, N type, S type and H type are available based on the construction of the core and additionally three typesof envelope conﬁguration are also available.

VALFLON Envelope Gasket [Core: N Type]

Fluorocarbon Resin
VALFLON Envelope Gasket
GasketVALQUA No.

N7030 (N) / N7031 (N) / N7035 (N)General use Envelope Gasket using Compressed Non-Asbestos Fiber
Sheet in the core.

VALFLON Envelope Gasket [Core: S Type]VALQUA No.

N7030 (S) / N7031 (S) / N7035 (S)High temperature and high pressure use an Envelope Gasket for preventing the ﬂow of a PTFE jacket, where Felt Sheets are attached on bothsides of the Compressed Non-asbestos Fiber Sheet to form the core.

VALFLON Envelope Gasket [Core: H Type]VALQUA No.

N7030 (H) / N7031 (H) / N7035 (H)This is an envelope Gasket that can be used under conditions withhigher temperatures, where Felt Sheets are attached on both sides of an
Expanded Graphite Sheet with a stainless steel sheet to form the core.

■ Types ■VALQUA No.

N typeVALFLON (PTFE) jacket

S typeVALFLON (PTFE) jacket
Non-asbestos ﬁber felt

H typeVALFLON (PTFE) jacket
Non-asbestos ﬁber felt

N7030 SeriesThin stainless steel
Compressed Non-asbestos Fiber Sheet

VALFLON (PTFE) jacket

Compressed Non-asbestos Fiber Sheet
VALFLON (PTFE) jacket
Non-asbestos ﬁber felt

Expanded Graphite Sheet
VALFLON (PTFE) jacket
Non-asbestos ﬁber felt

N7031 Series(1)Compressed Non-asbestos Fiber Sheet

VALFLON (PTFE) jacket

Compressed Non-asbestos Fiber Sheet
VALFLON (PTFE) jacket
Non-asbestos ﬁber felt

Thin stainless steel
Expanded Graphite Sheet
VALFLON (PTFE) jacket
Non-asbestos ﬁber felt

N7035 SeriesCompressed Non-asbestos Fiber Sheet

Compressed Non-asbestos Fiber SheetThin stainless steel
Expanded Graphite Sheet

Note (1) No.N7031 Series has a PTFE outer cover with one lap joint.
Remark As special purpose VALFLON Envelope Gaskets, products for monomers, for radiation resistance use, and for outer edge welded type are alsoavailable. Further information is available on request.

19

Design data
■ Dimensions ■■ Allowable ranges ■VALQUA No.

Temperature (℃)

Pressure (MPa)ー100〜150（1）1.5

VALQUA No.

Nominal thickness (mm)Size (mm)1.6，2.8，3.8

300〜3000

1000

N7030（N）

N7030（N）
N7031（N）

N7031（N）
N7035（N）

1000

N7030（S）

N7030（S）

1000

（1）

ー100〜200

N7031（S）

2.0

2.9，3.2，5.4

N7031（S）

300〜3000
1000

N7035（S）

N7035（S）

950

N7030（H）

N7030（H）
ー100〜260

N7031（H）

3.0

4.0，4.5，5.6

N7031（H）

300〜3000（1）950

N7035（H）

N7035（H）

Notes (1)The standard thickness is 4.5mm for those that exceed the
950mm size of No.N7031 (H). Since it requires special fabrication, please contact us for more information.
(2) Since an Expanded Graphite Sheet is used for an H type,the product cannot be folded when it is shipped.

Note (1) If the service temperature exceeds 120℃, be sure to tighten uniformly thegaskets so as not to apply piping stress on these gaskets. For applications subject
to frequent thermal variations or pressure changes, or for places where maintenance is diﬃcult to carry out, WHITETIGHT (No.7590 Series) is recommended.
Remark Temperature and pressure show individual service limits.

■ Design Criteria ■VALQUA No.

Gasket factor“m”

Minimum design seating stress“ｙ” (N/mm2)

N7030 Series

3.5

N7031 Series

4.0

N7035 Series

3.5

Recommended tightening stress( MPa)(1)Liquid

Gas

14.7

15.0

20.0

19.6

20.0

24.5

14.7

15.0

20.0

Fluorocarbon Resin
VALFLON Envelope Gasket
Gasket

N7035（N）

Note (1) The recommended tightening stress is the pressure required under standard conditions without consideration to the endforce due to internal ﬂuid. It is the stress on the contact area of the gasket.
Remark The m, y values are the same as those of ﬂuororesin gaskets speciﬁed in JIS B 2206.

■ Allowable ranges per ﬂuid ■【 N7030 (N) / N7031 (N) / N7035(N) 】【 N7030 (S) / N7031 (S) / N7035 (S) 】

2① Water based ﬂuid
② Oil based ﬂuid

①②③
④⑤

⑥

1

Pressure (MPa)

Pressure (MPa)2③ Solvent andcorrosive fluid

1④ Air, nitrogen gas,
inert gas, etc.

①②③
④⑤

⑥

⑤ Inflammable gas,
toxic gas, etc.
⑥ Low temperature
fluid

0
−29
−150 −100 −50
0

50

100

150

200

0
−29
−150−100 −50
0Temperature (℃)

50

100

150

200

250

Temperature (℃)

【 N7030 (H) / N7031 (H) / N7035 (H) 】■ Stress strain characteristics (No.N7030) ■<Dimension of test piece ：JIS 10K 100A>

30

No.N7030（N） No.N7030（S） No.N7030（H）
t2.8mmt3.2mmt4.0mm3

Stress (MPa)

Pressure (MPa)

①②③④
2

⑥

⑤

10

1

0
−29
−150−100 −50 0

50

100

20

150

Temperature (℃)

200

260
250 300

0
0

10

20

30

40

50

Strain (％)

20

■ Notes to be observed in design and usage ■Fluorocarbon Resin
VALFLON Envelope Gasket
Gasket▼ Notes to be observed in design▼ Notes to be observed before installation

・Determine the number and size of bolts and gasket dimensions to provide gaskets with suﬃcient tightening stress, andalso design the construction so as to ensure uniform distribution of tightening stress.
・Determine the construction, material and dimensions so thatthe ﬂange is not likely to cause rotation.
・Consideration shall be given in design to prevent applicationof excessive thermal stress or piping stress on the joints.
・Piping design shall not allow accumulation of drain or scaleat the ﬂange section.
・Consideration shall be given to prevent transmission of vibration to the joints.
・ Although the likelihood of occurrence of cold ﬂow in the
VALFLON (PTFE) has been reduced by adopting ﬂexible corematerials, prolonged operation or heat cycles may cause
bolts to be loosened. Therefore, these gaskets have to be
used in locations permitting periodic checks of loose bolts
and also allowing, appropriate tightening force to be
applied.
・When installing these gaskets onto titanium ﬂanges, check to
see if ﬂuids to be handled contain chlorine ions, as even a
trace amount of chlorine ions may cause crevice corrosion todevelop on the titanium surface in contact with the gaskets.
To prevent the occurrence of this crevice corrosion,titanium-palladium alloy is recommended.
・The inner diameter of VALQUA No.N7035 Series has a squareshape, which serves to eliminate accumulation of liquids, if
the gaskets are properly sized to meet the ﬂange inner diameter. For further details, please contact us, as gaskets can besized to meet the ﬂange inner diameter.
・Even when resin, glass or hard rubber lined ﬂanges comply
with JIS ﬂange standards, their inner diameter or the outer
diameter in contact with the gaskets are diﬀerent from thestandards. It is therefore necessary to determine the gasket
dimensions in conformity with the size of each ﬂange.
Further information is available on request. Also products areavailable on request, where the joint sheet has a core madeof corrugated metallic sheet.

・Check perpendicularity of the ﬂange and the pipe.
・Ensure the shaft alignment of the mating ﬂanges.
・Check for any deformation of ﬂanges.
・When changing only gaskets for the existing equipment or ata piping joint, clean the connecting section and check forany damage, and repair if required.
・Take oﬀ the rust at the ﬂange surface, and repair any dents
and dings.
・Pay attention not to damage the gaskets during storage or
during installation work.

▼ Notes to be observed in storage
・Store these products in a cool and dark place not subject todirect sunshine.
・Storage selected shall be in a clean environment, free fromdust as well as from high temperatures & high humidity andcorrosive atmosphere.
・If hanged on nails or the like, gaskets may suﬀer breakage orpermanent deformation, so that, as far as practicable, theyshould be put in a can or wrapped in a polyethylene bag andstored in a paper box.
・ Large sized gaskets should be put between larger plates
without rolling and placed horizontally for storage.
・ If Non-asbestos Felt Sheet becomes wet due to aqueous
liquids, its crush strength will decrease. It is therefore necessary to keep it dry in a polyethylene bag and also do nottighten when it is wet.

21

▼ Notes to be observed during installation work
・Install the gaskets in a clean environment so as to prevent
entry of foreign matters between the gaskets and theﬂanges.
・ If gasket paste is to be used, apply a minimum amount of"NEW VALFLON Paste" uniformly. Also care should be exercised after the application of paste, to prevent adhesion ofdust and the like.
・ Flange bolts shall be gradually tightened each time, andrepeat this process 4 to 5 times, so as to ﬁnally ensure
uniform tightening.
・ As the VALFLON (PTFE) outer cover is slippery, crush may
occur, if an excessive torque has been applied at the time oftightening or if it is not uniformly tightened. This is particularly applicable in the case of smaller diameter ones, and careshould be exercised in tightening so as not to apply gasket
stress exceeding 49.0 MPa.
・A small gap between ﬂanges present at the time of gasket
replacement would cause the VALFLON (PTFE) outer cover totouch the outside diameter of the raised face or the ﬂange
inside, and fold over. Tightening in this condition may cause
leakage. In order to prevent such fold over of the VALFLON(PTFE) outer cover, a gasket-outer edge welded type (ODS
type) is available. Further information is available on request.
・At the time of tightening gaskets, air contained in the corematerial may be discharged, so please be careful not to mistake this discharge for leakage when a leakage test is
performed using soap water. Our recommendation is tocheck leakage sometime after tightening the gaskets.
・Insuﬃcient tightening force may lead to the permeation ofsoap water for airtightness test or rain water, causing the
Non-Asbestos Felt Sheet to soften and squeeze out from thegaskets. In such a case, gasket stress decreases, which may
result in leakage.
・ At the time of load up or restarting, be sure to carry out
retightening.
・If retightening of gaskets that have already once experienced
leakage, fails in preventing leakage, replace them with newones.

Ordering Information
Please specify the following to place an order for these products:

4. Nominal pressure, Nominal diameter
5. Operating temperature, Fluid
6. Quantity

7. Thickness

Please refer to the following guide if necessary:

VALQUANo.N703□‐□□□□□□
Product No. 5th Digit (Jacket type)
Code

1st
Piping

2nd
Jacket material

Content

0

Split Design

1

Folded Design

5

Machined Design

3rd
Inner structure

4thOutside welding type

5th
Shape

6th
Insert material

CodeContent

Code

Content

Code

Content

Code

Content

Code

Content

Code

Content

S

Generalpiping5PTFE

SNo.6500 +Non-asbestos
Felt SheetZNo weldingZ

Raised Face
<Standard size>

Z

Standard〈No.6500〉

T

VALFLON
lined piping

1

PFA

N

Insert material
usually
No.6500

P

Complete alloutside welding(2)A

Raised Face
<Non-Standard Size>

A

No.6502

G

Glasslined piping

H

Flexible Graphite
Sheet with a metallic
reinforcement plate W+ Non-asbestos
Felt Sheet

All outside
welding(General use)

B

Flat Face<Envelope fitting
inside bolt circle>

B

No.6503

R

Metal(1) + No.6500+ Non-asbestos
Felt

R

All side
spot weldingE

Flat Face<Full covered
with envelope>H

Expanded Graphite
Sheet with a metallic
reinforcement plate

X

OthersS

Partial side
spot welding

X

OthersX

Others(3)K

Simple welding

4

FEP

Fluorocarbon Resin
VALFLON Envelope Gasket
Gasket1. Product number
2. Shape
3. Presence of special specification

Notes (1) Please specify the metal shape and the material of the core material.
(2) Only VALFLON Lining (No. N7035-T5NP) has all-around complete fusion.
(3) Using a rubber sheet is not generally recommended for core material since it would cause damage to the PTFE jacket.

Example of Description
High temperature use (H)：N703□‐□□H□□H
A multi-layer structure using the Expanded Graphite Sheet with a metallic reinforcement plate: N703□‐□□R□□H
22

Expanded Graphite
Sheet Gasket

VALQUAFOIL Gasket
VALQUA No. VF-30/VF-35E

Making use of the characteristics of the pure graphite sealing material VALQUAFOIL, these gaskets are excellent inheat and chemicals resistance as well as radiation resistance, and are applicable to wide temperature ranges fromcryogenic to high temperatures.
(“VALQUAFOIL” is a registered trademark in Japan for its Expanded graphite of NIPPON VALQUA.)VALQUAFOIL Gasket
VALQUA No.

VF-30

No.VF-30 Gasket is made by forming VALQUAFOIL into sheet, which isthen punched into a speciﬁed ﬂat shape.

VALQUAFOIL Gasket

Expanded Graphite
Sheet

VALQUA No.

VF-35E

This gasket is made by attaching VALQUAFOIL Sheets on both sides of athin stainless steel sheet (0.05 mm thick), which is then punched into a
speciﬁed ﬂat shape.

■ Type ■No.VF-30

No.VF-35E
Expanded graphite

Expanded graphite
Stainless Steel Sheet

Remark In addition to the above, VALQUAFOIL Gathered Tape (No.VF-50), VALQUAFOIL Flat Tape with Adhesive(No.VF-60), and VALQUAFOIL Gathered Tape with Adhesive (No.VF-70) are also available. Further information on these products is available upon request.

Design data
■ Dimensions ■■ Allowable ranges ■VALQUA No.
VF-30
VF-35E
Remarks

Temperature (℃)

VALQUA No.

Pressure (MPa)2.0−240〜400

VF-30

5.0

1.Temperature and pressure show individual service limits.
2.Not applicable to oxidizing acids such as hot, concentrated sulfuric acid and concentrated nitric acid.

VF-35E
Note (1)Thickness(1) (mm)Size (mm)0.4，0.8，1.0，
1.2，1.6，3.0

1000×1000

0.8，1.6，3.0

These products are available as gasket processed products.

■ Design Criteria ■VALQUA No.
VF-30
VF-35E

Gasket factor“m”

2.0

Minimum design seating stress“ｙ”(1) (N/mm2)

Recommended tightening stress (MPa)(2)Liquid

26.0

26.0

29.4

30.0

Gas
40.0

Notes (1) In accordance with the description in JPI-7R-70-88.
(2) The recommended tightening stress is the pressures required under standard conditions without consideration to the endforce due to internal
ﬂuid. It is stress on the contact area of the gasket.

23

■ Characteristic Values of VALQUAFOIL Gaskets ■VF-35E（1）

VF-30

Item

RemarkThickness (mm)

1.6

3.0

1.6

3.0

Tensile strength (MPa) (％)

3.8

3.8

15.6

10.3

Compressibility (34.3MPa) (％)

45

43

42

42

Recovery (34.3MPa) (％)

11

12

12

13

3

1067

1054

1216

1143

100℃×22h（%）

7.3

12.4

9.5

9.2

200℃×22h（%）

10.7

14.4

10.2

16.4

Density (kg/m )Creep relaxation( 20.6MPa) (％)―

JIS R 3453―
JIS R 3453

Expanded Graphite
Sheet

Note (1) These characteristic values of No.VF-35E correspond to those incorporating a thin stainless steel sheet.
Remark The above values are measurements, and not regulatory values.

■ Allowable ranges per ﬂuid ■【VF-30】【VF-35E】
52Pressure (MPa)

Pressure (MPa)

4

①②③
1

⑥

④

①②③

3

2

⑥

1

④
0

ー240
ー200

ー100

ー29
0

0
100

200

300

400

ー240
ー200

Temperature (℃)

Note (1)

ー100

ー29
0

100

200

300

400

Temperature (℃)① Water based ﬂuid

③ Solvent and corrosive ﬂuid

② Oil based ﬂuid

④ Air, nitrogen gas, inert gas, etc.

(Not Applicable) ⑤ Inflammable gas, toxic gas, etc.(1)⑥ Low temperature ﬂuid

Application to inﬂammable gas or toxic gas is not recommended.

24

■ Stress strain characteristics ■<Dimension of test piece：JIS 10K 25A>

<Dimension of test piece：JIS 10K 25A>

40

40
t 3.0 mm

No.VF-30

t 1.6 mm

No.VF-35E
t 3.0 mm

t 1.6 mm30
Stress (MPa)Stress (MPa)

30

20

10

20

10

0

0

Expanded Graphite
Sheet

0

10

20

30

40

50

0

10

Strain (％)

20

30

40

50

Strain (％)■ Notes to be observed in design and usage ■▼ Notes to be observed in design▼ Notes to be observed during installation work

・Determine the ﬂange construction and bolt arrangement to・ When installing gas seals, refer to the following "Counter-ensure uniform distribution of tightening stress to prevent
warpage or bowing of the ﬂange.

・Be careful about the pipe length, as the compressibility willchange.

measures against permeation leakage".

・Install the gaskets in a clean environment so as to prevent
entry of foreign matters between the gaskets and theﬂanges.

・Consideration shall be given in design to prevent application

・ Flange bolts shall be gradually tightened each time, andof excessive thermal stress or repetitive bending stress, or the

repeat this process 4 to 5 times, so as to ensure complete

transmission of vibration to the joints.

uniform tightening.

・Piping design shall not allow accumulation of drain or scaleat the ﬂange section.

・When tightening, pay attention to prevent the occurrence ofcrush. In particular, when using gaskets of 150 Lb, 1B or
smaller, or those of smaller gasket width, care should be▼ Notes to be observed in storage
・ Handle these products with care, as their sheet surface isliable to be damaged.

・Store these products in a cool and dark place not subject todirect sunshine.

given as gasket stress is likely to be excessive.

・ At the time of load up or restarting, be sure to carry out
retightening.

・If retightening of gaskets that have once experienced leakage
failed in preventing leakage, replace them with new ones.

・Storage selected shall be in a clean environment, free from・Since the allowance of tightening stress is low, please pay

dust as well as from high temperature & high humidity andspecial attention to crushing if using smaller diameter gas-corrosive atmosphere.

kets where high tightening stress is applied.

・If hanged on nails or the like, gaskets may suﬀer breakage orpermanent deformation, so that they should be put between▼ Countermeasures against permeation leakage

larger plates and placed horizontal for storage.

・Since permeation leakage is prone to occur in VALQUAFOIL▼ Notes to be observed before installation

1．Apply gasket paste on the cut surface of the gasket innergasket, the following points shall be observed for gas seals:

・Check perpendicularity of the ﬂange and the pipe.

diameter side. Applying gasket paste on the gasket surface

・Ensure the shaft alignment of the mating ﬂanges.

that contacts the ﬂange would be likely to cause crushing;・When changing only gaskets for existing equipment or at atherefore, special attention is required when tightening,

piping joint, clean the connecting section and check for any

and please apply a minimum amount of gasket paste.

deformation of ﬂanges, damage, rust, and repair if required.

2．Maintain the tightening stress to be around 35 MPa. Also

・Pay special attention not to damage the gaskets during transportation or during installation work.

use ring gaskets instead of full-face gaskets, so as to ensure
proper tightening stress.
3．As much as possible, use gaskets with a minimum thickness(1.5 mm or less).

25

PasteGasket Paste
VALQUA No. 5/5M/6/6M/SEALP/PSVO

Gasket Paste is an agent employed to enhance the sealing eﬀect ofgasket contact surfaces and to facilitate peeling oﬀ gaskets whendisassembling joints. Select an optimum type among a variety of
products.

Applicable ﬂuids

Allowable
temp. range (°C)

Mode of packing

Black

Water based ﬂuids such as
steam, hot water, water,seawater, acid, alkali, salt
solutions and alcohol

ー 200 〜 200

2.5kg
polyethylene
container

Gasket Paste
No.5M

Water based ﬂuids such as
White paste containing spesteam, hot water, water,cial oil-soluble adhesive
Pale yellow seawater, acid, alkali and salt
compounded with ﬁnesolutions, where white paste
particles of mica.
is specially required

ー 200 〜 200

2.5kg
polyethylene
container

Gasket Paste
No.6

Black paste containing special water-soluble adhesive,
which have high oil andsolvent resistance, compounded with ﬁne particles
of graphite.

Hydrocarbon based ﬂuids
such as petroleum based oil,oil gas, solvent, solvent
vapor, animal & vegetableoil, LNG and general gases

ー 200 〜 900

2.5kg
polyethylene
container

Gasket Paste
No.6M

Paste containing a watersoluble adhesive having
high oil and solvent resis- Pale yellow
tance, mixed with ﬁne mica
particles.

Hydrocarbon based ﬂuids
such as petroleum based oil,oil gas, solvent, solvent
vapor, animal & vegetableoil, LNG and general gases,
where white paste is specially required

ー 200 〜 900

2.5kg
polyethylene
container

SEALPASTE
No.SEALP

When handling water, airand hydrocarbons such as
gasoline, kerosene, lubricatLight brown paste containing oil, natural gas, LPG,
ing a special non-drying oil
refrigerants, hydrogenadhesive, compounded with Light brown
sulﬁde, ethylene, butane,
inorganic ﬁller material andand ethane, and also wherea small amount of solvent.
the prevention of crevice
corrosion on the ﬂange
surface is required.

ー 50 〜 300

800g
metallic container
with brush

Description

Gasket Paste
No.5

Black paste containing special oil-soluble adhesivecompounded with ﬁneparticles of graphite.

NEW VALFLON
Paste
No.PSVO

It is a ﬂuororesin powderthat is water-dispersed
using surfactant agents.

Black

White

When handling highly
corrosive ﬂuids such as
strong acids, alkalis, or halogens and when handling
oxygen where noncombustible materials are required.

ー 200 〜 300(O2 gas 100℃)

Gasket Paste

Color

Product name100g
metallic tube
1 kg
polyethylene
container■ Note ■Excessive application of gasket paste on the contact surface between the gasket and the ﬂange would cause the gasket to slide whentightened and be likely to cause crushing. Therefore, when applying the gasket paste on the contact surface between the gasket andthe ﬂange, please apply a thin and uniform coating of the paste.

26

VALQUATIGHT Gasket

Spiral Wound
GasketVALQUA No. 8590 Series / 8590TN / 6590 Series / 6590VC Series / 7590 Series / M590L Series / M590 Series

Spiral Wound Gaskets use inorganic paper, VALQUAFOIL (expanded graphite) and VALFLON (PTFE) tapes as ﬁller
materials, and they exhibit good elasticity by means of a V-shaped hoop. These gaskets are suitable at joints for pipe
ﬂanges, heat exchangers, towers & tanks, valve bonnets and other equipment that handle high temperature & highpressure ﬂuids used in various industries including oil reﬁning, chemical, power, gas and shipbuilding.
Basic type

With outer ringWith innerr ringWith inner & outer ring

Name

Filler material

CLEANTIGHT

Inorganic paper

No.8590

No.8591

No.8592

No.8596

BLACKTIGHTVALQUAFOIL tape

No.6590

No.6591（1）No.6592

No.6596

WHITETIGHT

VALFLON tape

No.7590

No.7591（1）No.7592

No.7596

No.M590L

No.M591L

No.M592L

No.M596L

No.M590

No.M591

No.M592

No.M596

Lined Mica Filler

Mica

Spiral Wound Gaskets+ VALQUAFOIL tape

Mica Filler
Spiral Wound Gaskets
Note (1)Mica

Since No.6591 and No.7591 may cause radial buckling in the inner diameter side depending on service conditions, employ gaskets with inner& outer rings as much as possible.

CLEANTIGHTVALQUA No.

8590 Series

VALQUATIGHT

FeaturesThis is a Spiral Wound Gasket using inorganic paper. The product ismore economical compared to other products in which VALQUAFOIL
or VALFLON is used.
▶ It has high heat resistance.
▶Products that comply with nuclear power speciﬁcations are alsoavailable.

Applications

The product is suited for general-purpose products of utility lines that
handle high temperature and high-pressure ﬂuids.

NONASUPERVALQUA No.

8590TN

Features

NONASUPER is made by winding hoops (SUS304) around the periphery of 3.2mm thick basic Spiral Wound Gaskets.
The product can be used with the same level of tightening force asthat of a Compressed Non-asbestos Fiber Sheet.
▶The maximum service temperature is 450°
C.

Applications

The product is suited for utility lines that handle high temperature
ﬂuids.

Dimensions

JIS 10K，JPI Class 150，Max 200A
〈Thickness〉3.2mm

Composition

Hoop：SUS304

Filler material: Inorganic paper■ Design data ■■ Dimensions ■Metal hoopLap-wound part27

Gasket main unit

VALQUA No.

Thickness(mm)

8590TN

3.2

Pressure
ratingJIS 10K
JPI Class 150

VALQUA No.

Recommended
tightening stress (1) (MPa)8590TN

30.0

Note (1)The tightening stress corresponds to the projectedarea of the gasket main body only, and does notinclude the metal strip lap-wound section.

BLACKTIGHT / BLACKTIGHT for Extremely Low Temperature
VALQUA No.

▲6590 Series

6590 Series

FeaturesThis is a Spiral Wound Gasket using VALQUAFOIL (expanded graphite)
as ﬁller material.
▶Excellent air tightness that signiﬁcantly improves sealing performance for gas and vacuums.
▶Responds well to heat and pressure cycles, which reduces thefrequency of retightening.
▶They also have excellent radiation resistance (products complying
with nuclear power speciﬁcations are available).
▶They exhibit excellent sealing properties at very low temperatures.
(No.6596VC type has been developed for cryogenic use. Further
information is available upon request.)

Applications

These gaskets are particularly suited for handling high temperaturesand high-pressure steam, heat transfer oil (except HTS). They are also
suitable for extremely low temperature ﬂuids.

VALQUA No.

6590VC Series

FeaturesThis is a gasket for extremely low temperature application, and it has
high sealability even at a low gasket stress by making the 6590 series
more ﬂexible.
▶This product has excellent sealability under extremely low temperature conditions such as LNG.
▶A process that can seal even under low gasket stress is used.

Applications

It is suitable for applications with extremely low temperature ﬂuids
such as LNG, liquid nitrogen and liquid hydrogen or those requiring asealing property at low tightening stress.

VALQUATIGHT

WHITETIGHTVALQUA No.

7590 Series

FeaturesUsing VALFLON (PTFE) tape having excellent chemicals resistance asﬁller material, these Spiral Wound Gaskets are more eﬀective thanother ﬁller materials in sealing corrosive ﬂuids and air tightness, thus
are suitable as gas and vacuum seals.
▶Together with excellent corrosion resistance and a suitable selection of hoop materials, they can be applied to almost all ﬁelds of
ﬂuid applications.
▶Excellent air tightness signiﬁcantly improves sealing performanceagainst gas and vacuums.

Applications

Particularly suitable as gaskets for corrosive ﬂuid seals and oxygen as
well as for gas and vacuum seals.

Lined Mica Filler Spiral Wound Gaskets / Mica Filler Spiral Wound Gaskets
VALQUA No.

M590L Series

FeaturesThis is a Spiral Wound Gasket made of expanded graphite ﬁller andcloth-less mica ﬁller made by a special manufacturing process, and it
has excellent sealability and signiﬁcantly improved heat resistancedue to an anti-oxidation eﬀect on expanded graphite by the mica ﬁller.
▶ Maximum service temperature is 750°
C.

Applications

For super-high temperature

VALQUA No.

M590 Series

FeaturesThis is a Spiral Wound Gasket using a clothless mica ﬁller. The productminimizes strength deterioration due to heating.

Applications

For HTS (Oxidizer: a mixture of sodium nitrate, potassium nitrate andsodium nitrate) used as a high-temperature heat transfer oil▲M590 Series

28Ordering Information
Please specify the following to place an order for these products:

1. Product number

4. Presence of special specification

2. Material

5. Nominal pressure, Nominal diameter

3. Shape

6. Operating temperature, Fluid

VALQUA No.

Classification

7. Quantity

Types

BLACKTIGHT

WHITETIGHT

CLEANTIGHT

Mica filler products

Fillermaterial

VALQUAFOIL tape

VALFLON tape

Non-Asbestos

Mica tape

6590

7590

8590

M590

1.6 mmP
T

Basic type

Supplementary
information

Thickness (1)NominalCode
thickness

With outer ring

6591

7591

8591

M591

3.2 mmWith inner ring

6592

7592

8592

M592

4.5 mmV

With inner &outer ring

6596

7596

8596

M596

4.8 mmM

6.4 mmW

OthersX

VALQUATIGHT

Note (1) Mica ﬁller
products areavailable in
4.5mm, 4.8mm
and 6.4mm.

▼Spiral wound gaskets with lines

Content

CodeGraphite tapeline addedL（2）Graphite tapeline added withspecialrequirements

S（2）Cryogenic
TemperatureserviceC（3）Others−

Notes (2) Available in
CLEANTIGHT and
Mica ﬁller products.
(3) Applicable only to
BLACKTIGHT.

Non-asbestos inorganic filler or Mica filler
By winding VALQUAFOIL ﬁller in the middle of inorganic ﬁllers, these spiral Wound
Gaskets have enhanced gas sealability with increased compatibility with ﬂanges.
Further, the inner ﬁller and outer ﬁller shuts oﬀ the oxygen supply, inhibiting theoxidation of VALQUAFOIL under oxidizing conditions and makes it possible to be
used in high temperatures.
Available in CLEANTIGHT or Mica ﬁller products.
VALQUAFOIL filler▼Need for an Inner Ring
An inner ring has the function of maintaining the tightening force by preventing the gasketʼs main body from deforming toward theinternal diameter. If installing into a non-groove ﬂange that has no restraint on the internal diameter side, please use a product with an
inner ring under the following conditions.

29

Type

No-inner ring type

With inner ring type

RatingClass 600, 40K or lower

Class 900，63K or higher vacuum

Dimensions

24B or lower

26B or higher

Classiﬁcation

Filler material

VALFLON (PTFE), VALQUAFOIL (expanded graphite)

Fluid

Oxygen, toxic ﬂuid, other highly hazardous ﬂuid

Please refer to the following guide if necessary:
VALQUA No.

Thickness

Supplementary
information
Inner ringmaterial

Hoopmaterial

Material
Inner ring material
CodeSpecialtreatmentOuterring material

Shape and Accessories

Hoop material

Content

Shape andAccessories

Material

Special treatment

Outer ring material

Content

Code

Content

Code

SUS304E

SUS304E

SUS304E

SUS304L

L

SUS304L

L

SUS304L

L

SUS310SO

SUS310SO

SUS310SOG

SUS316G

SUS316GH

SUS316L

H

SUS316L

H

SUS317LQ

SUS317LQ

SUS317LQ

SUS321J

SUS321J

SUS321J

SUS347K

SUS347K

SUS347K

SUS410R

SUS410R

SUS410R

SUS430U

SUS430U

SUS430U

Monel 400

M

Monel 400

M

Monel 400

M

Nickel 201

N

Nickel 201

N

Nickel 201

N

Titanium TP340

T

Titanium TR270

T

Titanium TP340

T
W

Incoloy 800

W

Incoloy 800

W

Incoloy 800

Inconel 600

Y

Inconel 600

Y

Inconel 600

Y

AluminumA

AluminumA

AluminumA

Low CS

S

Hastelloy C276

V

Low CS

S

Hastelloy C276

V

CopperC

Hastelloy C276

V

OthersX

OthersX

OthersX

Not applicableZ

Not applicable

Z

Code

Content

Code

Basic modelZ

Without
Special treatment

Z

Basic model+ Handle

B

Nuclearapplication

E

Basic model+ Rib(s) heatexchanger
application

Y

Pitting
corrosionpreventive
finishC

Basic model+ Hanger

H

Degreased

B

Irregular shapewithout
accessories

E

Other
special treatment
Also includes
combinations
for the above
specialtreatments

X

Other
special shapes

X

VALQUATIGHT

SUS316
SUS316L

Content▼ Combination of special treatments and each product
VALQUA No.

Names

Nuclear application(Code E)

Pitting corrosionpreventive finish(Code C)

Degreased(Code B)

6590 Series

BLACKTIGHT○

Standard○

7590 Series

WHITETIGHT

×

×

○

8590 Series

CLEANTIGHT

○

○

○

M590 Series

Mica filler products

×

○

○

○

Available

×

Unavailable

30

Design data
■ Allowable ranges ■■ Dimensions ■VALQUA No.

Temperature (℃)

8590 Series

ー200〜500（1）6590 Series

ー270〜450

7590 Series

ー260〜300

20.0

ー200〜750

30.0▼ For standard pipe ﬂanges

Pressure (MPa)For JIS pipe ﬂanges ＝ 10K，16K，20K，30K，40K，63K
For JPI and ANSI pipe ﬂanges＝ Class150，300，400，600，900，1500，2500
Gaskets complying with other standards such as ASME and MSS arealso available.

30.0▼ For non-standard pipe ﬂanges

M590L Series
M590 Series

Gasket Thickness Manufacturing Ranges(mm)of(mm)
the Main Part Internal Diameter

VALQUA No.

Note (1)Temperatures of 500 to 600℃ may be allowed depending on service
conditions. In the case of using No.8590 Series for temperatures exceeding 500℃ , the following should be observed:①Adequate tightening shall be performed initially. Further information
is available upon request.
②Their sealing property is equal to that of spiral wound gaskets thatuse asbestos ﬁllers. For applications requiring higher airtightness,
No.8590L Series are recommended.
Remarks 1.Temperature and pressure show individual service limits.
2.The above temperature ranges vary depending on the material used
for the hoops and the inner & centerring rings.

8590 Series
6590 Series

6.4mm（W）

300〜3400（1）4.5mm（V）

10〜3000

3.2mm（T）

10〜1500（2）
1.6mm（P）

10〜150

M590L Series

6.4mm（W）

300〜2500

M590 Series

4.5mm（V）

10〜2500

7590 Series

Notes (1) The outer diameter of the outer ring can be up to 3500.
(2) The products with a gasket thickness of 1.6mm can be made only if it is
the basic type and its hoop is made of SUS316.
Remarks 1.( ) indicates thickness classiﬁcations.
2.The manufacturing ranges are round type gaskets.

■ Design Criteria ■Spiral Wound Gaskets have m and y values that are the same as those deﬁned in Appendix G to JIS B 8265.
VALQUA No.

Gasket factor“m”

Minimum design seating stress“ｙ” (N/mm2)

Recommended tightening stress (MPa)(1)Gas

Liquid70.08590 Series

VALQUATIGHT

6590 Series

3.07590 Series

50.0

35.0

68.9

35.0
70.0

M590 Series
Note (1)Remark

The recommended tightening stress is the pressures required under standard conditions without consideration to the endforce due to internal ﬂuid. It is stress on the contact area of the gasket.
Separate consultation is required if ﬂange deformation is anticipated for large diameter gaskets.

■ Allowable ranges per ﬂuid ■

30

①②

20

Pressure (MPa)

Pressure (MPa)30【6590 Series】

③④

10

20

-200 -100

-29
0

③④

10

⑤

⑥
0

①②

⑥
0

100 200 300 400 500【7590 Series】
30

Pressure (MPa)【8590 Series】

20

⑤

-270
-29
-200 -100 0

450
100 200 300 400 500

Temperature (℃)

Temperature (℃)

【M590L/M590 Series】

Pressure (MPa)30① Water based ﬂuid①②

20

② Oil based ﬂuid
③ Solvent and corrosive ﬂuid③④

④ Air, nitrogen gas, inert gas, etc.

10

⑤ Inflammable gas, toxic gas, etc.
⑤

⑥
0
-200

-29
0

750
300

Temperature (℃)

31⑥ Low temperature ﬂuid
600

①②
③④

10

⑥
0

⑤

-260
-29
-200 -1000100Temperature (℃)

200

300

Metal Jacketed
GasketMetal Jacketed Gasket
VALQUA No. N510/N520 Series / N530/N570/N580/N6510/N6520/N6580

The Metal Jacketed Gasket is a semi-metallic gasket where the outside of
the core material (cushion material), such as heat-resistant felt, is covered
with a metal sheet. Various shapes are available on request, suitable forirregular ﬂanges and heat exchange gaskets. Two types of gaskets areavailable for cross shapes, ﬂat or corrugated. In addition to the above,
VALQUAFOIL Gathered Tape with Adhesive (No.VF-70) or VALQUAFOIL
Sheet (No.VF-30) are also available to enhance the sealing property.

Metal Jacketed Gasket (Round coating)
VALQUA No.

N570

The core material of this Gasket is warped with a thin metal sheet andprocessed into a circular cross section. In addition to circles, the product can be fabricated into non-standard ﬂat shapes such as oval,ellipse, angular, diamond and pear-shaped.

Metal Jacketed Gasket (Corrugated coating)
VALQUA No.

Metal Jacketed Gasket (Double-covered coating)N510

VALQUA No.

N580

This Metal Jacketed Gasket uses heat-resistant felt and other materials
as the core material, and the outside of the core is covered with two
sheets of metal which are corrugated in a multi-concentric pattern. A
complete sealing can be assured with low seating stress. A labyrinth
eﬀect can also be expected due to corrugation.

The core material of this ﬂat Gasket is covered with two sheets ofmetal, and it has a structure in which the lower sheet is folded onto
the upper surface; then, the upper sheet is folded onto the lower
surface.
In the case of a large-diameter gasket, which is equipped in the malefemale ﬂange of a horizontal type machine, this product has superior
safety in its application as compared to N520.

Metal Jacketed Gasket (All-covered coating)

Metal Jacketed Gasket with VALQUAFOIL adhered

VALQUA No.

N520

VALQUA No.

N6510/N6520/N6580

This ﬂat Metal Jacketed Gasket uses heat-resistant felt and other materials as the core material, and the outside of the core is covered with
two sheets of metal.

VALQUAFOIL is adhered on both sides of N510 / N520 / N580 toenhance sealing performance.

Metal Jacketed Gasket (Half-covered coating)

Metal Jacketed Gasket (French cross-section)

N530

VALQUA No.

N520-F

Metal Semi-metal Metal Jacketed Gasket

VALQUA No.

This ﬂat gasket has a core made of heat-resistant felt or Compressed
Non-asbestos Fiber Sheeting, or a combination of both, and the core iscovered by thin metal shaped into a u-shape.

The core materials of these Gaskets are covered with a metal sheet on
one side.
They are ideal for applications that require narrow and ﬂat productswith small diameters, which are diﬃcult to fabricate with N520 or N580.

■ Types ■No.N510

No.N520

No.N530

No.N570

No.N580

Cushion material

Cushion material

Cushion material

Cushion material

Cushion material

No.N6510

No.N6520

No.N6580

No.N520-F

VALQUAFOIL

VALQUAFOIL

VALQUAFOIL

Cushion material

Cushion material

Cushion material

RemarkCushion material

Except for products attached with VALQUAFOIL, gasket paste (SEALPASTE or No.6M) should be used in general.
The recommended ﬂange surface ﬁnish is 1.6a (Ra).

Metal Jacketed Gasket (Grommet processed product)
VALQUA No.

N520-C

Compressed Fiber Sheet, etc.

The cut surface on the inner diameter side of the sheet gaskets, which are made of Compressed Nonasbestos Fiber Sheeting and the like, is covered with a thin metal sheet (grommet-ﬁnished), and it helps toprevent permeation leakage as well as erosion.
Note: Heat-resistant felt cannot be used.

32

Design data
■ Allowable ranges ■VALQUA No.

■ Dimensions ■Temperature (℃)

Any forms or shapes are available. For dimensions, productswith a maximum diameter of about 3,000 mm can be manufactured, while even larger ones may also be produced on site
upon request. It is also possible to manufacture highly reliable
products with minimal junctions of gasket cores (patented
manufacture) to be used for heat exchangers and the like.
Further information is available upon request. In case of
No.N520-C, dimension speciﬁcations depend on core materials used.

Pressure (MPa)

N510
N520
N530

Depending on

N570

cover metal(1)

N580

7.0

N6510
N6520

−240〜400

N6580
N520-F

Depending on cover metal(1) Depending on core material

N520-C

Depending on core material

Note (1)Please refer to the reference values listed below for the
maximum service temperatures of gasket metallic materials.

■ Design Criteria ■Minimum design seating stress Recommended tightening stress (MPa)(3)“ｙ” (N/mm2)(1)Gas(4)
LiquidCover Material

Gasket factor“m”

Soft aluminum

2.50

20.0

―

―

Soft copper or Brass

2.75

25.5

―

―

Low CS or Iron

3.00

31.0

―

―

VALQUA No.

N510 Series

Monel

3.25

37.9

―

―

4 - 6% chrome steel

3.25

37.9

―

―

Stainless steel

3.50

44.8

―

―

Soft aluminum

3.25

37.9

20

60

Soft copper or Brass

3.50

44.8

30

100

Low CS or Iron

3.75

52.4

45

140

Metal Semi-metal Metal Jacketed Gasket

N520 Series(2)

Monel

3.50

55.2

―

―

4 - 6% chrome steel

3.75

62.1

―

―

Stainless steel

3.75

62.1

70

200

Notes (1) The minimum design seating stress "y" corresponds to values obtained when applied with gasket paste.
(2) For No.N520-C, the m, y values of core materials are applicable.
(3) The recommended tightening stress is the pressures required under standerd conditions without consideration to the endforce due to internal ﬂuid. It is stress on the contact area of the gasket.
(4) The values of recommended tightening stress shown under the gas sealing category indicate those without the application of gasket paste. If
gasket paste is used, the values of recommended tightening stress for liquid will apply.

■ Stress strain characteristics ■■ Maximum service temperatures for gasket metallic materials (for reference) ■<Dimension of test piece ：JIS 10K 25A>
160
No.N520
Cover material SPCC

140

Stress (MPa)Maximum service
temp. (℃)

Material

Maximum service
temp. (℃)

Lead

100

5Cr-0.5Mo steel

621

Brass

260

SUS 410649

100

Aluminum

260

Silver649

80

Copper400

Nickel760

60

SUS 304

427

Monel metal

816

SUS 316816

SUS 321816

Pure iron538

SUS 347

816

Low CS

538

Inconel

1,093

Titanium

1,093

Hastelloy

1,093

120

40
20
0
0

10

20
Strain (％)

33

Material

30

40

RemarkSince the above maximum service temperatures are based on air
with a certain constant temperature, the products vary to a great
extent depending on the type of ﬂuids, pressures and mode of use.

Ordering Information
Please specify the following to place an order for these products:

1. Product number

4. Presence of special specification

7. Quantity

2. Material

5. Nominal pressure, Nominal diameter

3. Shape

6. Operating temperature, Fluid

Please refer to the following guide if necessary:
VALQUA No.

N520

Metal Jacketed Gasket(Non-asbestos cushion material)
Double-jacketed
corrugatedDouble-jacketed
Half-covered
coatingRound coating

Shape

Round

N580

Frenchcross-section

N520F

4

Round withpartition bar

YSoft Non-asbestos
millboard

7

ObroundC

Other
special material

X

Oval

N

SquareE

Other special shape

X

N520

Double-covered
coating

PTFE sheet

T

N510

N570

Z

Jacket metal material

Expandedgraphite sheet

Round withcentering plate

N530

Core material

5

VALQUAFOIL adhered
Metal Jacketed Gasket
N6510

Double-jacketed

N6520

Double-covered
coating

N6580

Frenchcross-section

N6520FVALQUA No.

N520C

Grommet-ﬁnished

N520C

Remarks

Shape

Core material

SC

SUS 304

E

SUS 304LL

SUS 310SO

SUS 316G

SUS 316L

H

SUS 321J

SUS 347

K

SUS 410R

5Cr-0.5Mo steel

F

Brass

B

Monel metal

M

TitaniumT

NickelN

Aluminum

A

Lead

P

OthersX

Jacket metal material

PTFE sheet

4

Expanded graphite sheet

5Compressed Fiber Sheet

6

Other special materialX

Without
special treatment

Z

Degreased

B

With tape seal

T

OthersX

Metal Semi-metal Metal Jacketed Gasket

Double-jacketed
corrugated

Low CS
CopperSpecial specification

Special specification

1.Shapes, core materials, coated metallic materials and special speciﬁcations may be indicated in alphanumeric characters.
2.Please consult us if you are not able to ﬁnd your desired shape or material in this table.
3.When ordering N520C (grommet processed products), please clearly specify the dimensions and the core material.

〔Ex〕 Metal Jacketed Gasket, Round, Soft Non-Asbestos millboard, SUS316, Degreased
・VALQUA No. N520−Z7GB
or・VALQUA No. N520−Round, Soft Non-Asbestos millboard, SUS316, Degreased34

Metallic Serrated and Flat Gasket

Metallic Flat
GasketVALQUA No. 540 Series / 6560 Series / 560 Series / 6540H Series・6540HP

These gaskets are manufactured from cold rolled metal plate, and include ﬂat gaskets made of metallic sheet which isprocessed into a speciﬁed dimension and shape, and serrated gaskets with concentric grooves to improve sealing
property.
■ Allowable ranges ■6560（1）
Series6540H（1）
SeriesVALQUA No.

540
SeriesTemperature

Depending on the component metallic materials(2)Pressure

14.0 MPa

560
Series

Notes (1)The heat resistance temperature of products with VALQUAFOIL attached is 400℃. Applications subject to temperatures
exceeding 400℃ require separate consultation.
(2) For maximum service temperatures of component metallic
materials, refer to "Maximum service temperatures for gasket
metallic materials (for reference)" on page 33.
Remark Temperature and pressure show individual service limits.

■ Applications ■■ Types ■VALQUA No.

Types

560
Series

Metallic Flat Gasket

6560
Series

Metallic Flat Gasket with
VALQUAFOIL attached

540
Series

Cross section

These are used as joints in the form of either raised face ﬂanges,
tongue and groove ﬂanges or male and female ﬂange for
towers, tanks, heat exchangers, autoclaves and valve bonnets
for high temperature & high pressure steam and in processlines.

Ordering Information
VALQUAFOIL
No.VF-30

Products with any given dimensions can be made to orderby providing information concerning the material, shapeand dimensions. Gaskets of various dimensions made of

Metallic Serrated Gasket

oxygen free copper are also available, which are to be used
for knife-edged shape bakable ﬂanges (ICF, UFC ﬂanges,

Metal Semi-metal Metallic Serrated and Flat Gasket

6540H
Seriesetc.) in use for semiconductor related facilities and vacuum

Kammprofile Gasket
VALQUAFOIL
No.VF-30

equipment.

Kammprofile Gasket (For piping)
VALQUA No.

VALQUAFOIL
No.VF-30

35

6540HP

FeaturesThis is a 6540H-series product for piping applications, and its
dimension is optimally set as an alternate for a Compressed Fiber
Sheet.

Dimensions

JIS 10K，Max 600A
JPI Class 150，300，Max 24 inch

Composition

SUS304，SUS316L

Service temp.

−240℃〜 400℃

VALQUA No.

Recommended
tightening stress (MPa)（1）6540HP

35.0

Note (1)The recommended tightening stress is the pressures required under normal conditions,and correspond to the projected area of the gasket, where ﬂuid pressure is not taken
into consideration.

Ordering Information
Please specify the following to place an order for these products:

1. Product number

4. Presence of special specification

7. Quantity

2. Material

5. Nominal pressure, Nominal diameter

3. Shape

6. Operating temperature, Fluid

Please refer to the following guide if necessary:[ Metallic Serrated Gasket ]VALQUA No.

540

Metallic Serrated
Gasket540

Kammprofile Gasket

6540H

Shape

Round

Cross section

Z

Without collar

MaterialZ

Round with bar

YWith outer collar

M

Other special shape

X

With inner collar

V

With outer andinner collar

W

Other special shape

X

Special specifications

Low CSS

CopperC

SUS 304

E

SUS 304LL

SUS 316G

SUS 316L

H

5Cr-0.5Mo steel

F

Monel metal

M

TitaniumT

AluminumA

OthersX

Without
special treatment

Z

DegreasedB

V groove finishedK

OthersX

Metal Semi-metal Metallic Serrated and Flat Gasket[ Metallic Flat Gasket ]VALQUA No.

560

Metallic Flat Gasket

560

Metallic Flat Gasket
with VALQUAFOIL
attached

Remarks

Shape

Round

Cross section

Z

Without collar

MaterialZ

Round with bar

YWith outer collar

M

ObroundC

With inner collar

V

SquareE

With outer andinner collar

W

Other special shapeX
Other special shape

X

6560

1.Shapes and materials may be indicated in alphanumeric characters.
2.Please consult us if you are not able to ﬁnd your desired shape or material in thistable.
3.Please contact us if you need a copper ﬂat gasket for knife-edged shape bakableﬂange use.

〔Ex〕 Serrated Gasket, Round, With outer collar, SUS304, V groove ﬁnished・VALQUA No. 540−ZMEKor・VALQUA No. 540−Round , With outer collar, SUS304, V groove ﬁnishedSpecial specifications

Pure ironD

Low CSS

CopperC

SUS 304

E

SUS 304LL

SUS 316G

SUS 316L

H

SUS 321J

SUS 347

K

SUS 410R

SUS 430U

5Cr-0.5Mo steel

F

Monel metal

M

TitaniumT

SilverV

Aluminum

A

Lead

P

OthersX

Without
special treatment

Z

Degreased

B

OthersX

36

Ring Joint Gasket

Ring Joint
GasketVALQUA No. 550 Series

These gaskets are made of a single metal, and to be used for ring joint ﬂanges.

■ Types ■VALQUA No.

Names(Cross section name)

550-ZO

Ring Joint Gasket(Oval)

550-ZS

Ring Joint Gasket(Octagonal)

550-ZA

Ring Joint Gasket(API-RX)

550-ZP

Ring Joint Gasket(API-BX)

550-ZB

Improved Bridgeman
Gasket(Wedged cross section)

550-ZD

Delta Ring
(Triangular)

550-ZL

Lens Ring(Lens)

550-ZW

Double Corn-Shaped
Gasket(Double corn)

550-ZR

Circle Shaped Metallic
Gasket(Circle cross section)

550-ZE

Diamond Shaped
Ring■ Applications ■Widely used as gaskets for pipe ﬂanges, pressure vessels,
towers, tanks and valve bonnets for handling high temperature& high pressure steam, gas, oil and solvents used in oil reﬁning,chemicals, power, shipbuilding and other similar activities.
■ Manufacturing ranges ■▼Dimensional Standards
The dimensions speciﬁed in JPI, ASME, API, MSS and the like forring joint ﬂanges are standards dimensions.

■ Maximum Hardness by Material ■Metal Semi-metal Ring Joint Gasket

Material

37

Names

Maximum Hardness (HB)

Low CS

120

Pure iron90

Copper60

SUS304160

SUS304L

150

SUS310S

160

SUS316160

SUS316L

150

SUS321

160

SUS347160

SUS430170

5Cr-0.5Mo steel

130

Monel metal

140

Titanium140

Aluminum40

Nickel120

Cross sectionOrdering Information
Please specify the following to place an order for these products:

1. Product number

4. Presence of special specification

7. Quantity

2. Material

5. Nominal pressure, Nominal diameter

3. Shape

6. Operating temperature, Fluid

Please refer to the following guide if necessary:

VALQUA No.

550

Shape

Round
Other special shapeZ
X

Material

Ring Joint(Oval cross section)O

Ring Joint(Octagonal cross section)

S

Ring Joint(API-RX cross section)A

Ring Joint(API-BX cross section)

P

Improved Bridgeman Gasket

B

Delta Ring

D

Lens Ring

L

Special specifications

Without
special treatment

Z

C

Degreased

B

SUS304E

OthersX

SUS304L

L

SUS310SO

Low CS

S

Pure ironD

Copper

SUS316G

SUS316L

H

SUS321J

SUS347K

SUS430U

5Cr-0.5Mo steel

F

Monel metal

M

TitaniumT

Corn-Shaped Gasket

C

Double Corn-Shaped Gasket

W

Circlre Shaped Metallic Gasket

R

NickelN

Diamond Shaped RIng

E

AluminumA

Special Shaped

X

OthersX

Metal Semi-metal Ring Joint Gasket

Remarks

Cross section

1.Please indicate the shape and material by entering the code in the parenthesis ( ).
2.Please consult us if you are not able to ﬁnd your desired shape or material in thistable.

〔Ex〕 Round shape〔Oval cross section〕,SUS304L, Degreased
・VALQUA No. 550−ZOLBor・VALQUA No. 550−Round, Oval cross section, SUS304L, Degreased38

Metal C-ring Gasket
with Spring

TRYPACKVALQUA No. 3645/3645LS SeriesThis is a metal C-ring made of a coil spring as an elastic element, which is covered with a thin metal sheet such as analuminum sheet. Since it is elastic and high in recovery and also able to seal at low tightening forces, the product canbe used in fields handling high temperatures, ultra high vacuum, as well as in applications subject to extremely low
temperature and high pressure, where rubber O-rings cannot be used.
■ Types of products ■No.3645
Double layer
Outer jacket

Inner lining
Coil spring

No.3645
Single layer
Outer jacket
Coil spring

No.3645
Double layer（Split Inner lining）■ Applications ■This product is used for semiconductor-related items, nuclearrelated items, electronic industry, laser equipment, joints,
valves, injection molding machines, etc.

Inner lining
Coil spring

Outer jacket

Inner lining
Coil spring

Outer jacket

No.3645LS
Double layer（LS Type）
V-groove process

Design data
■ Compression Recovery Characteristics of TRYPACK (No. 3645) ■■ Allowable ranges ■Temperature(1) (℃)−270〜250

Pressure (MPa)Ultra high vacuum 〜7300■ Manufacturing ranges ■Cross sectional diameter (mm)(1)

Inner diameter (mm)3.8

25〜1500

5.6

150〜2000

Note (1)This product is also available in cross sectional diameters of
1.7, 2.6, 8.0, 10.0, etc.

Cross
Groovesectional Inner diameter depth Required tightening force(N/mm)
diameter(mm)
Silver/Nickel/ Stainless steel/(mm) Aluminum Copper Tantalum Titanium
(mm)
5〜50

1.4

200

220

250

290

2.6

10〜100

2.1

220

250

340

400

3.8

25〜1500

3.0

250

310

490

590

5.6

150〜2000

4.5

320

390

640

780

8.0

175 or above

7.0

340

490

─

─

10.0

175 or above

9.0

390

590

─

─

0.8

0.4

0.2

0.2

Flange surface roughness (Ra)

39

S

200

150

100

S0

50

0

■ Design data ■1.7

Tightening force (N/mm)

Metal Semi-metal TRYPACK

250
Temperature and pressure show individual service limits.
Note (1) The temperature ranges shown are for aluminum, and theyvary depending on the component materials used.

S1

0.2

0.4

0.6

0.8

1.0

1.2

Compression deformation (mm)SampleSingle-layer
Outer jacket : A1050P
Coil spring : SUS304-WPB
Dimension
Cross sectional diameter : 3.8mm
Inner diameter : 71mm
Acceptable leak rate : He 1.0×10-11 Pa・㎥/s
Initial sealing point : S0 78.4 N/mm
Sealing limit point : S1 44.1 N/mm
Note : S0 is the point where the leak volume becomes below the acceptable leak rate, and S1 is the limit point where the leak volume canbe kept below the acceptable leak rate.

■ Component materials ■Component

Material

Frequency of use

Aluminum(A1050P)◎

Nickel(NLCP，NNCP)◎

SilverOuter jacket

Inner lining

Coil spring

Element○

Stainless steel(SUS304L，SUS316L)○

Tantalum(TaP)○

Copper(C1100P)△

Stainless steel(SUS304，SUS316)◎

Inconel(Inco.600)◎

Stainless steel(SUS304−WPB)◎

Inconel(Inco.X750)◎◎ : Used often○ : Used sometimes

Seal

Stress dispersion

Elasticity△ : Rarely used

Ordering Information
Please specify the following to place an order for these products:

1. Product number

4. Presence of special specification

7. Quantity

2. Material

5. Nominal pressure, Nominal diameter

3. Shape

6. Operating temperature, Fluid

VALQUA No.

3645

Shape

Cross section

Basic type

3645

Round

Z

Sold in sets

3645S（1）ObroundC

SquareE

Other
special shape

X

・Single layer
Openedouter diameter
Openedinner diameter

Aluminum(A1050P)A

SUS304E

SUS304L

L

C

SUS316GD

SUS316L

H

NickelN

E

Copper(C1100)C

F

SilverV

X

Other qualityof material

X

A
B

・Double layer
Openedouter diameter
Openedinternal diameter・Double layer withsplit inner lining
Openedouter diameter
Openedinner diameter
Otherspecial shape

Note (1)Retainer and polygonal ring are sold insets.
Remarks 1.Shapes and materials may be indicatedin alphanumeric characters.
2.Please consult us if you are not able toﬁnd your desired shape or material inthis table.
3.Please let us know if you are ordering
the set of a retainer and polygonal ring.

Outer jacket

Coil Spring +Inner lining

Metal Semi-metal TRYPACKPlease refer to the following guide if necessary:Specialspecification

SUS304＋None

4

Inconel×750＋None

7

SUS304＋SUS304

ASUS304＋SUS316

B

SUS304＋
Inconel600

C

Inconel×750＋
SUS304

E

Inconel×750＋
SUS316

F

Inconel×750＋
Inconel600

G

Other qualityof materialX

Without
special treatment

Z

Degreased

B

OthersX[Ex] In the case of a round shape, single layer (opened outer diameter), coating SUS304,
spring Inconel, no-special speciﬁcation.
・VALQUA No. 3645-ZAE7Z

40

Metal Hollow O-ring Gasket

Metal Hollow
O-ring Gasket

VALQUA No. 3640/3641 Series

Metal Hollow O-rings are made of thin metal pipe processed into a circle or other specified shapes, with both ends
welded together. Since they can offer sealing with a relatively low tightening force as well as compact gasket joints,
these products can be used in various types of equipment for high temperature, high pressure and high vacuum
applications.
■ Product types ■VALQUA No.

Types

3640

Basic type

3641

Balancing design

Cross section■ Applications ■They are used as gaskets for equipment in various industries,
such as aerospace equipment, vacuum equipment,
semiconductor-related items, nuclear power-related items,
electronic equipment, agitators, melt spinning machines andhydraulic machines.

Design data
■ Allowable ranges ■■ Tube Material and Surface treatment …Service Temperature ■(1)

Service temperature(℃)

Material
Stainless steel (SUS304)
Stainless steel (SUS316)
Stainless steel (SUS321)
Incoloy 800−250〜540−250〜820−250〜870−250〜980

VALFLON PTFE Coating
Plated silver
Surface
Plated nickel
treatment
Plated copper
Plated gold

−200〜260−250〜650−250〜760−250〜400−250〜850

Tube
Material

Note (1)Temperature (℃)

Pressure (MPa)3640

Depending on thecomponent metallic
materials(1)High vacuum〜7MPa

3641
Note (1)

Vacuum〜300MPa

Please refer to the table shown below for the temperature
limit of the component metallic materials.

メタル
Metal
Semi-metal
Metal Hollow O-ring Gasket
セミメタル

The heat resistance of a surface-treated metal hollow O-ring isdetermined by the lower maximum temperature of either the
tube material or coating material.

■ Manufacturing ranges ■Pipe Pipe diameter×
symbol pipe thickness( Unit: mm )SUS304J

0.9×0.15

L

0.9×0.25

G

1.6×0.15

A

1.6×0.25

M

1.6×0.35

B

1.6×0.5H

2.4×0.15

C

2.4×0.25

N

2.4×0.35

D

2.4×0.5○○

SUS316

SUS321

Incoloy800○

Minimum bending radiusof square-shaped product(1)(inner diameter)

Ma nufa ctura ble
dimensions(outer dia meter)4

8 〜 100

○
○
○

○

◎

○

7

○

6

11 〜 200

○
○

○

○
○

○

○

22
○
17

◎
○

○

○

10

○

○

45

25 〜 350E

3.2×0.25

O

3.2×0.35

F

3.2×0.5P

3.2×0.8I

4.8×0.5○○75

200〜2000K

6.4×0.8○○90400〜2500

38

○
○

○

◎

○

40〜1500

20○◎ : Materials that are used often
Note (1)41

VALQUA No.

○ : Standard inventory materials

Please use this value as a reference for the corner radius of square-shaped products.

Ordering Information
Please specify the following to place an order for these products:

1. Product number

4. Presence of special specification

7. Quantity

2. Material

5. Nominal pressure, Nominal diameter

3. Shape

6. Operating temperature, Fluid

Please refer to the following guide if necessary:

VALQUA No.

Basic type

Balancing design
type

3640

Shape

Cross section

3640

Round

Z

3640S

ObroundC（Sold in set(2)）

SquareE3641 (1 )3641S（Sold in set）

Other
special shapeX

Basic design(without hole)Z

With an internal
diameter holeN

With an outer
diameter hole

T

Other
special shape

X

Tube material

Surface treatment

SUS304E

No coatingZ

SUS316G

VALFLON coating

4

SUS321J

Plated silver

V

Incoloy 800

W

Plated nickel

N

Specialmaterial

X

Plated copper

C

Plated gold

5

Special material

X

Specialspecifications

Without
special treatment

Z

DegreasedB

For vacuum,external pressure

V

OthersX

Notes (1)

メタル
Metal
Semi-metal
Metal Hollow O-ring Gasket
セミメタル

Please contact us if you are using the balancing design type with the standard number of holes to handle highly viscous ﬂuid or slurry that
could possibly clog its holes.
(2) Metal Hollow O-rings are sold in sets with a retainer.
(3) The heat resistance of a surface-treated metal hollow O-ring is determined by the lower maximum temperature of either the tube material or
coating material.
Remarks 1.Shapes and materials may be indicated in alphanumeric characters.
2.Please consult us if you are not able to ﬁnd your desired shape or material in this table.

〔Ex〕In the case of balancing design, round shape, for internal pressure, use SUS304 or plated silver
・VALQUA No. 3641 - round shape, for internal pressure, use SUS304 or plated silver
or
・VALQUA No. 3641−ZNEVZ42

VALQUATEX Gasket

Rubber CoatedFabric Gasket

VALQUA No. N214/N314

VALQUATEX is a rubber-coated fabric that uses materials such as glass and ceramic ﬁbers.

VALQUA No.

Types of products

Allowable temperature (℃)

N214This type of gasket is made fromrubberized glass ﬁber fabric.

400

N314

This type of gasket is made fromrubberized metal wire-reinforced
ceramic ﬁber fabric.

800■ Manufacturing ranges ■VALQUA No

Nominal thickness (mm)N214

1.6, 3.2, 4.8, 6.4＜1.6×any＞

N314

2.0, 4.0, 6.0, 8.0＜2.0×any＞■ Applications ■▶VALQUATEX Gaskets are used for equipment

Shape
Products with any
speciﬁed shape anddimensions can be
manufactured.

manhole ﬂanges or exhaust gas duct ﬂanges.
▶Since these gaskets do not have suﬃcient
air-tightness, use them where some leakage is▶ Products with surface treatment using graphite are available upon request.
(This facilitates peeling oﬀ gaskets when disassembling joints.)

allowable.

Synthetic Rubber Sheet Gasket

Rubber Sheet
GasketVALQUA No. 2010/4010/5010

These gaskets are made by punching synthetic rubber sheets of various materials, and are used for low pressure
applications where adequate tightening force is not available.
■ Manufacturing ranges ■Allowable ranges

VALQUATEX/
Rubber Sheet

VALQUANo.

Rubber material
Nitrile rubber (NBR)−30 〜 120

2010

Chloroprene rubber (CR)−30 〜 120

Temperature (℃)

Ethylene propylene rubber (EPDM)−40 〜 150

4010

Fluoro rubber (FKM)−15 〜 200

5010

Silicone rubber (VMQ)−60 〜 200

RemarkPressure (MPa)The above temperatures should be used as a reference.

■ Manufacturing ranges ■Thickness (mm)1.0, 1.5, 2.0, 3.0, 4.0, 5.0

Size (mm)Max. OD 1000

Ordering Information
Sheet or punched gaskets can be made to order by providing

43

information concerning the material, shape and dimensions.

0.5

Textile Product

Flame-Resistant Carbonized Fiber Textile
VALQUA No. 101C/105C/112C

Because they use bulking treated yarn, these are better in ﬂexibility and heat resistance than conventional glass cloth.
They are best suited for cladding material to be used in heat insulation & cold insulation work.
Yarn
VALQUA No.

101C

Application

Heat resistant glass yarns■ Standaed dimensions ■Weight (kg)Nominal size (mm)

（1）

φ3

180

φ5

92

（1）

▶Even in direct contact with strong ﬂame, ﬂame resisting
carbonized ﬁber becomes red hot, but will not fuse or stick.
▶It has excellent heat insulation eﬃciency, with its heat
conductivity being less than that of glass ﬁber, and thesame level as wool.
▶It has excellent heat resistance. (Max. service temperature:250℃).
▶Also has excellent chemical resistance, as its weight loss inorganic solvent is negligible, while in inorganic chemicals,
weight loss is as low as 2 to 3%.
▶The product has a drape property that is not available inglass ﬁber, and it is easy to handle and high in ﬂexibility.

（1）

1

φ 6.5

Features

Length (m)

52

（1）

φ8

35

φ 9.5

26

（1）

φ 12.5

−

φ 16

−

φ 19

−

φ 22

−

φ 25

−

Note (1)30

These lengths are approximate estimates.

Cloth
VALQUA No.

105C
Flame-Resistant Carbonized Fiber Textile

Cladding material for heat insulation & cold
insulation of pipe and ducts, heat insulating
material around engines and boilers, clothfor heat resisting protective equipment andthe like

Application■ Standard dimensions ■Nominal thickness(mm)

Dimensions

Reference weight(g/m2)

Weave

1.5

1,000mm×30m

670

Plain
weave

RibbonTextile Products

VALQUA No.

112C

Application

Cladding material for heat insulation & cold
insulation of pipe and ducts, heat insulating
material around engines and boilers, clothfor heat resisting protective equipment andthe like■ Standard dimensions ■Nominal thickness(mm)Width (mm)Length (m)1.525, 32, 38, 50, 65, 75, 100

30

44

Heat-Resistant Glass Fiber Textile

Textile Product

VALQUA No. 101G/102G/105G/105GF/112G/112GA/112GC

With the use of bulking treated yarn, these are better in ﬂexibility and heat resistance than a conventional glass
cloth, and are best suited for cladding material to be used in heat insulation and cold insulation work.
Yarn
VALQUA No.

101GHeat resistant glass yarns

Application■ Dimensions ■Weight (kg)Nominal size (mm)φ3120（1）

φ5

44（1）
1

φ 6.5

Features▶Maximum service temperature: 350°
C
▶These are excellent heat insulating materials, with heat
conductivity of one half or below than that of asbestos cloth.
▶Their tensile strength is high, as much as several times higher
than that of asbestos under normal temperatures.

18（1）

φ 9.5

13（1）

φ 12.5

−

φ 16

−

φ 19

−

φ 22

−

φ 25

−

Note (1)112G (Ribbon)
112GA (Ribbon with aluminum on one side)
112GC (Ribbon with adhesive on one side)

These lengths are approximate estimates.

Packing
VALQUA No.

102GHeat resisting sealing material, door packing
and the like

Nominal size(mm)Cladding material for heat insulation & cold
insulation of pipe and ducts, heat insulating
material around engines and boilers, maintenance material for high temperature workand the likeHeat-Resistant Glass Fiber Textile

Application

Reference weight (g/m)
NominalLengththickness(m)(mm)
W25 W32 W38 W50 W65 W75 W100

Weave

Textile Products

0.750（1） −

−

−

26

−

38

52 Diagonal

1.7

22

30

34

45

59

68

90

42

53

64

85 106 128 170

30

Reference weight (g/m)

Length(m)

Round Braid

Square Braid

6.5

55

60

8

78

87

9.5

94

107

11

127

151

12.5

160

194

227

300

19

340

400

22

467

534

25

567

717

32

900

1,140

38

1,300

1,440

30

16

■ Dimensions ■Note (1)30■ Dimensions ■VALQUA No.

2.7

25（1）

φ8

Application

Ribbons

Length (m)

weave

Cloth

Plain
weave

VALQUA No.

105G (Cloth) /105GF (Cloth with heat resisting SUS wire)
Cladding material for heat insulation & cold
insulation of pipe and ducts, insulating material around engines and boilers, cloth forheat resisting protective and the like

Application

Length of No.112G, t0.7 is 30m.

■ Dimensions ■Nominal thickness
(mm)

Width
(mm)

0.5
0.7
1.7
2.7
Remark

45

Length
(m)

50
1,000
30

Reference weight
(g/m)

450
490
920
1,750

Weave
Diagonal
weave
Plain
weave

For No.105GF, only t1.5×W1,000mm×L30m is available.

Textile Product

Ceramic Fiber Textile
VALQUA No. 101S/102SF/102S/105S/105SN/112S/112SN

Made of ceramic ﬁber, having excellent ﬂexibility and heat resistance, these are used as various types of sealingmaterials, such as heat insulating material, shielding material and protective material. Since a small amount of organicﬁber is included in the manufacturing process, some amount of smoke is generated at the initial stage of heating,while No.105SN cloth and No.112SN ribbon (liver) are smoking prevention treated.
Ribbons
VALQUA No.

112S (Ribbon)
112SN (Smoke prevention treated ribbon)

Application

High temperature sealing material, various
types of high temperature heat insulating
material, and the like

■ Dimensions ■112S

VALQUA No.
Color toneWhite

Dark brown

Weave

Plain weave

Plain weave

Reinforcing material

Stainless steel wire

Stainless steel wire

Max. service temp. (℃)

1,260

1,260

Ignition loss (％)

< 28

< 10

Thickness (mm)2，325，32，38，50，
65，75，10030

1.8，2.7
25，32，38，50，
65，75，100
30

Width (mm)Features

One roll length (m)▶These are excellent in heat resistance and ﬁre resistance.
(Max. service temperature: 1,260°
C, and 600°
C for No.102SF)▶These have low heat conductivity and have excellent heatinsulation properties.
▶These are ﬂexible and have excellent workability.
▶These also have excellent chemical stability.

Yarns and Rope
VALQUA No.

VALQUA No.

105S (Cloth)
105SN (Smoke prevention treated cloth)

Application

High temperature curtains, high temperature
sealing material, gaskets, various types ofhigh temperature heat insulating material,
protectors against weld spark and the like

101S (Yarns)

Application

Various types of high temperature heat insulating material, textile material and the like

VALQUA No.

Cloth

112SN

102SF (Braided yarn)

Application

High temperature sealing material, various
types of high temperature heat insulating
material, and the like

Components

Core: ceramic fiber

Cladding: glass fiber

VALQUA No.

102S (Stainless steel wire insert braided rope)

Application

High temperature sealing material

Ceramic Fiber Textile■ Dimensions ■■ Dimensions ■VALQUA No.

VALQUA No.

105S

105SN

Color tone

101S

102SF

White

VALQUA No.

Color toneWhite

Dark brown

Weave

Plain weave

Plain weave

Reinforcing material

Stainless steel wire

Stainless steel wire

Max. temp. (℃)

1,260

1,260

Ignition loss (％)

< 28

< 10

Thickness (mm)2，3

1.8，2.7

Width (mm)

1,000

1,000

φ6

19

One roll length (m)

30

30

φ9

22

φ12.5

25

φ16

32

Max. service temp. (℃)
Ignition loss (％)

1,260

600

6.5
8

< 25

9.5

VALQUA Nominal size Weight
No.
(kg)
(mm)

Length
(m)

φ3

200

12.5

100

16

101S
102SF

φ5

φ19
φ22
φ25
φ30
φ38

1

−

30

11

Textile Products

101S

102S

Nominal size(mm) Length(m)3038RemarkBoth squareshaped andround-shaped
types are manufactured.

φ50

46

Related ProductGasket Cutter
VALQUA No. CUTTER① Supporting iron (300L)② Floating pole forneedle core
③ Floating pole for cutter
blade④ Straight core needle⑤ Bending type coreneedle⑥ Blade⑦ Knob for ﬂoating pole(spare)⑧ Straight stud for
ﬂoating pole
⑨ Pressure bolt forneedle core
⑩ Pressure bolt for cutter
blade⑪ L-shaped handle⑫ Grinding stone

Features▶This is a set of convenient tools to easily cut out ﬂange
gaskets at a construction site or for assembly work.
▶The supporting iron has scale marks, which allows easy andaccurate size adjustments.
▶By using a supporting iron (500L) which is sold separately,
it is possible to cut out gaskets as large as 1,000 mm.
▶It is highly recommended to keep this tool as an
indispensable workshop tool not only in the maintenancedepartment of a chemical plant, oil reﬁnery or iron plant,
but also in the assembly area of machine or equipment
manufacturers as well as in pipe laying companies.

■ Instructions for use ■1. First, insert the straight core needle ④ or the bending type coreneedle ⑤ at the bottom of the ﬂoating pole of the needle core ②, andﬁx it using the pressure bolt for the needle core ⑨. In this case, use thebending type core needle ⑤ if the cut diameter is up to 50 mm, anduse the straight core needle ④ for a cut diameter larger than 50 mm.
2. Next, at the groove of the ﬂoating pole of the cutter blade ③, attach
the blade ⑥ with two pressure bolts from the cutter blade ⑩.
3. Thread the supporting iron ① into the ﬂoating pole of the needle core
② and the ﬂoating pole for the cutter blade ③.
4. Set the part marked with "◁" of the ﬂoating pole of the needle core ②
to zero to match the supporting iron ① as shown in Figure A, andﬁrmly tighten with the knob.
5. Then, also shift the part marked with "◁" of the ﬂoating pole forcutter blade ③ to a desired position on the supporting iron ①■ Cutting range ■Minimum diameter : 50mm
(approx.20mm by using bending type core needle ⑤)

determined by the radius of the gasket to be cut, and tighten ﬁrm
with the knob.
6. Before cutting, place the material on a sheet of plywood board or a

Maximum diameter : 540mm

corrugated paper that is placed on a ﬂat base or ﬂoor. Then, put the

By using a supporting iron (500 L) which is sold separately, it isgasket cutter as shown in Figure B, hold the ﬂoating pole of thepossible to cut out gaskets as large as 1,000 mm.

needle core with your left hand ②, and lightly dig in the straight coreneedle ④ or the bending type core needle ⑤. Now, lightly holding
the ﬂoating pole for cutter blade ③ with your right hand, rotate it to■ Placing part orders ■cut forward while slightly pushing as if you were making a circle.

Parts worn after long years of operation should be replaced with newparts. Orders for single items are also accepted when certain items areⒶ

missing.
(For cutter blades ⑥, one replacement set consisting of ﬁve blades isavailable)Ⓑ
Gasket Cutter

47

Product No. Index
Please use below table if you are looking up the page numbers from the product number.
Product No.
(VALQUA No.)

Product namePage

Product No.
(VALQUA No.)

Product name

Page

101C

Flame-resistant Carbonized Fiber Textile Product (Yarn)

446590 Series

BLACKTIGHT

28-31

101G

Heat-resistant Glass Fiber Textile Product (Yarn)

45

6590VC Series

BLACKTIGHT for Extremely Low Temperature

28-31

101S

Ceramic Fabric Textile Product (Yarn)

46

7010

VALFLON Sheet Gasket

15-16,18

102G

Heat-resistant Glass Fiber Textile Product (Packing)45

7010-EXNew VALFLON Gasket

15-16,18

102S

Ceramic Fabric Textile Product (Braided rope with stainless wire)

46

7020

VALFLON Gasket

15-16,18

102SF

Ceramic Fabric Textile Product (Rope with glass ﬁber)

46

7026

Black VALQUALON Gasket

15-16,18

105C

Flame-resistant Carbonized Fiber Textile Product (Cloth)

447590 Series

WHITETIGHT

28-31

105G

Heat-resistant Glass Fiber Textile Product (Cloth)

45

7GP61

VALFLON Soft Gasket (Sheet)

15,16,18

105GF

Heat-resistant Glass Fiber Textile Product (Cloth with SUS lines)

45

7GP61S

VALFLON Soft Gasket (Sheet)

15,16,18

105S

Ceramic Fabric Textile Product (Cloth)

46

7GP66

VALFLON Soft Gasket (Gasket)

15,16,18

105SN

Ceramic Fabric Textile Product (Smoke prevention treated cloth)46

7GP66S

VALFLON Soft Gasket (Gasket)

15,16,18

112C

Flame-resistant Carbonized Fiber Textile Product (Ribbon)

44

7GS66A

Cord Seal [Oval type]

17,18

112G

Heat-resistant Glass Fiber Textile Product (Ribbon)

45

7GS62A

Cord Seal [Tape type]

17,18

112GA

Heat-resistant Glass Fiber Textile Product (Ribbon with aluminum on one side)45

7GS64N

Cord Seal [Rope type]

17,18

112GC

Heat-resistant Glass Fiber Textile Product (Ribbon with single-sided adhesive material)

45

8590TNNONASUPER

27

112S

Ceramic Fabric Textile Product (Ribbon)

468590 Series

CLEANTIGHT

27,29-31

112SN

Ceramic Fabric Textile Product (Smoke prevention treated ribbon)

46（CUTTER）

Gasket Cutter

47

2010

Synthetic Rubber Sheet Gasket (NBR)

43

GF300

BLACKHYPER

7,9,13,142010

Synthetic Rubber Sheet Gasket (CR)43

M590 Series

Mica Filler Spiral Wound Gaskets

28-31

2010

Synthetic Rubber Sheet Gasket (EPDM)

43

M590L Series

Lined Mica Filler Spiral Wound Gaskets

28-31

3640

Metal Hollow Gasket

41,42

MF300

BRIGHTHYPER

8,9,13,143641

Metal Hollow Gasket (Balancing design)

41,42

N214

VALQUATEX Gasket (Rubber-coated glass ﬁber)

43

3645

TRYPACK

39,40

N314

VALQUATEX Gasket (Ceramic ﬁber cloth with rubber-coated metal wire)

433645LSTRYPACK (Low tightening force type)

39,40

N510

Metal Jacketed Gasket (Corrugated coating)

32-34

4010

Synthetic Rubber Sheet Gasket (FKM)

43

N520

Metal Jacketed Gasket (All-covered coating)

32-34

540 Series

Metal Serrated Gasket

35,36

N520-C

Metal Jacketed Gasket (Grommet processed product)

32-34

550-ZA

Ring Joint Gasket(API-RX)

37,38

N520-F

Metal Jacketed Gasket (French cross-section)

32-34

550-ZB

Improved Bridgeman Gasket (Wedged cross section)

37,38

N530

Metal Jacketed Gasket (Half-covered coating)

32-34

550-ZD

Delta Ring (Triangular)

37,38

N570

Metal Jacketed Gasket (Round coating)

32-34

550-ZE

Diamond Shaped Ring

37,38

N580

Metal Jacketed Gasket (Double-covered coating)

32-34

550-ZL

Lens Ring (Lens)

37,38

N6510

Metal Jacketed Gasket with VALQUAFOIL adhered

32-34

550-ZO

Ring Joint Gasket (Oval)

37,38

N6520

Metal Jacketed Gasket with VALQUAFOIL adhered

32-34

550-ZP

Ring Joint Gasket (API-BX)

37,38

N6580

Metal Jacketed Gasket with VALQUAFOIL adhered

32-34

550-ZR

Circle Shaped Metallic Gasket (Circle cross section)

37,38

N7030

VALFLON Envelope Gasket

19-22

550-ZS

Ring Joint Gasket (Octagonal)

37,38

N7031

VALFLON Envelope Gasket

19-22

550-ZW

Double Corn-Shaped Gasket (Double corn)

37,38

N7035

VALFLON Envelope Gasket

19-22

560 Series

Metal Flat Gasket

35,36

（PS5）

Gasket Paste No.5

26

5010

Synthetic Rubber Sheet Gasket (VMQ)

43（PS5M）

Gasket Paste No.5M

26

6500

Compressed Non-asbestos Fiber Sheet for general use

10,12-14（PS6）

Gasket Paste No.6

266500AC

Anti-corrosion Compressed Non-asbestos Fiber Sheet

10,12-14（PS6M）

Gasket Paste No.6M

26

6502

BLACKSUPER

10,12-14（PSVO）NEW VALFLON Paste

26

6503

White Compressed Non-asbestos Fiber Sheet for general use

11-14（SEALP）

SEALPASTE

26

6503AC

Anti-corrosion white Compressed Non-asbestos Fiber Sheet

11-14

SF300

WHITEHYPER

8,9,13,146540HP

Kammproﬁle Gasket (For piping)

35

UF300

UNIVERSALHYPER

7,9,13,146540H Series

Kammproﬁle Gasket

35,36

VF-30

VALQUAFOIL Gasket

23-25

6560 Series

Metallic Flat Gasket with VALQUAFOIL attached35,36

VF-35EVALQUAFOIL Gasket

23-25

48

ZY03 1601 01 SEN