G.0

Pressure

Introduction

Description
CeramTec’s pressure feedthroughs
are terminated in NPT (NationalPipe Thread) fittings or otherthreaded fittings to allow for easybulkhead installation. The NPTpressure units are designed to besealed using Teflon tape or otheracceptable sealants. All otherdesigns use an o-ring seal.
These Ceramaseal® components areusually used in pressure vessels orindustrial environments. High vacuum applications are also common
but note that the use of threaded
connections in a vacuum systemshould be minimized. The small
spaces between the threads cancause virtual leaks.
CeramTec has been designing andmanufacturing high pressure, highreliability, ceramic-to-metal assemblies for more than 55 years.
The pressure feedthroughs in thissection show capability in designfor pressures up to 25,000 psig. In
every design, the ceramic used ishigh-grade alumina or glass-ceramic, the NPT mounting members are
304 or 316 stainless steel and theceramic-metal braze materials are
silver, silver-copper or copper.

PRESSURE

Standard Specifications• 1/8” to 1/2” NPT fittings• Internal pressures from 1 x 10-10
torr to 25,000 psig
• Feedthrough, multipin connector,coaxial, CeramTite and Tec-Sealunits available• 1 to 10 conductors

Extreme / Custom Design• Different fittings: cone andthread, NPT, straight thread andweld designs• Internal pressures from 1 x 10-10
torr to 40,000 psig

182

• Instrumentation, multipin connector, coaxial, and thermocouple
units are available• Precious metal braze alloys

Typical Pressure FeedthroughConstruction

Installation
CeramTec’s high quality pressure
feedthroughs mount easily throughNPT fittings or other threaded fittings.

Applications
A few of the many applications inwhich these pressure feedthroughs
are commonly used are:• Undersea communications• Geothermal energy
exploration

NPT Fitting

FlangeInsulator• Power generation• Furnaces
WasherNew Products• Power Plug feedthroughs mounted in NPT fittings

Conductor• CeramTite™ glass-ceramic sealed
high pressure feedthroughs• Tec-Seal™ high pressure
feedthroughs

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Pressure

TypeG.0

Table of Contents

Voltage
DC

Current(Amps per pin)

Pressure @ 20˚C

SectionPages

Number ofConductors

Conductor
Material

Feedthrough: Copper
Multipin: Alumel
Coaxial: 304 Stn. Stl.
or Nickel

NPT

G.1
184-187

Sub-section

PSIG (Bar)to25 kV

to185 Amps

4000 (275)

1, 4, 6& 10500 V

4 Ampsto25,000 (1724)

1 to 3

AlumelCeramTite™

G.2
188-189

1.5 kV

15 Amps

to25,000 (1724)

152 Nickel iron

Tec-Seal™

G.3
190-191

PRESSURE

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183

ew

NPT
FeedthroughPressureN

G.1

Power Plug Cable Assemblies.050 [1.3] Dia. Conductor – 1/8” NPT

20 kV Power Plug.154 Power Plug

20 KV Power Plug – 1/8” NPT

96 [2440]

3.2 [81].44 [11] Hex

Ø .30
[7.6]

1/8 NPT

Ø.63[16]

Ø.094
[2.4]
.40 [10]
2.1 [53].26 [6.6]

8 AWG Wire
with Silicone Rubber Sheath

7.8 [198]

Body: Molded Silicone Rubber
Color: Orange.154 Power Plug – 3/8” NPT

Contact: 5/32" Socket
Gold Plated Beryllium Copper.250 Power Plug
.69 [18] Hex

Ø.154
[3.9]

96 [2440]

3/8 NPT

3.9 [99]

Ø.34
[8.6]
Ø.90 [23]6 AWG Wire
with Silcone Rubber Sheath.50 [13]
1.8 [46].4 [10]

Body: Molded Silicone Rubber
Color: Red

Contact: 1/4" Socket
Gold Plated Beryllium Copper

PRESSURE

7.4 [188].250 Power Plug – 3/8” NPT

Feedthrough Specifications.69 [18] Hex
Ø.250
[6.4]

3/8 NPTMaterials
NPT Fitting: 316 Stainless steel
Conductor: Copper or 304 Stainless steel
Insulation: Alumina ceramic
Magnetic Materials: See table.75 [19].3 [8].4 [10]2.6 [66]

Voltage Rating See table
Current Rating See table

7.0 [178]

Temperature Range -269°C to 450°C
Pressure @ 20°C See table

184

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.050 [1.3] Dia.
Conductor, 1/8” NPT

VOLTAGEDCCONDUCTORAMPS MATERIALINSTALLATIONPRESSURE@20˚CPSIGBARMAGNETIC
MATERIALSPARTNUMBER

5 kV

27

Copper

1/8” NPT

4000

275

Yes

2846-01-A

20 KV Power Plug1/8” NPT

20 kV*20 kV*

3.655

304 Stn. Stl.
Copper

1/8” NPT
1/8” NPT

4000
4000

275
275

No
No

21322-01-A
21324-01-A.154 Power Plug3/8” NPT

10 kV*100

Copper

3/8” NPT

1000

69

Yes

21152-01-A.250 Power Plug3/8” NPT

25 kV*185

Copper

3/8” NPT

1000

69

Yes

21143-01-A

Air Side Cable
Assemblies

CABLE
TYPE

TYPE

Contacts

TYPE
0.050 Crimp Contacts
0.094 Set Screw Type Contacts
0.094 Barrel Type Contacts
0.154 Barrel Type Contacts
0.250 Barrel Type Contacts
Crimp Tool

VOLTAGE CONDUCTOR
AMPS
DC

8’
8’8’

20 kV
10 kV
25 kV

MATERIAL
Beryllium Copper
Beryllium Copper
Beryllium Copper
Beryllium Copper
Beryllium Copper

55
75
100

TEMPERATURE ˚CMIN
MAX

PART
NUMBER-55-55-5514419-02-A
21094-01-A
20956-02-A†125125125

DESCRIPTIONPARTNUMBER

Accepts wire up to 0.062 [1.6]
Accepts wire up to 0.050 [1.3]
Accepts wire up to 0.094 [2.4]
Accepts wire up to 0.154 [3.9]
Accepts wire up to 0.250 [6.4]
For 0.025” - 0.075” Crimp Diameters

11911-02-X†7429-01-A
7332-04-A
7332-07-A
7332-06-A
2840-05

ew

G.1

PRESSURE

20 kV Power Plug 10 AWG.154 Power Plug
8 AWG
.250 Power Plug
6 AWG

LENGTH

NNPT
FeedthroughPressure*When used with airside cable assembly. **Contacts priced and sold in packages of 10. †Shown in photo. See the Accessories section formore information on all accessories. Note that voltage ratings are based on a minimum of 250 volts DC per mil dielectric strength on thepressure side.

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185

G.1

NPTMultipin & Coaxial Connector

PressureMIL-C-5015 Type – 1/2” NPT

Coaxial – 3/8” NPTSpecifications - Multipin Connector

Specifications - Coaxial Connector

Materials

Materials

NPT Fitting: 316 Stainless steel
Conductor: Alumel
Insulation: Alumina ceramic
Magnetic Materials: Yes
Voltage Rating 700 V DC
Current Rating 7 Amps per pin
Temperature Range -269°C to 450°C
Pressure @ 20°C
4 Pin: 600 (41 Bar)
6 Pin: 550 (38 Bar)
10 Pin: 500 (34 Bar)NPT Fitting: 316 Stainless steel
Conductor:
BNC: 304 Stainless steel
MHV: 304 Stainless steel
SHV: Nickel
Insulation: Alumina ceramic
Magnetic Materials:
BNC: No
MHV: No
SHV: Yes
Voltage Rating BNC: 500 V, MHV: 5 kV, SHV: 5 kV DC
Current Rating
BNC: 3.6 Amps, MHV: 3.6 Amps, SHV: 16.5 Amps
Temperature Range -269°C to 450°C

PRESSURE

Pressure @ 20°C

186

BNC: 1400 (97 Bar)MHV: 1400 (97 Bar)
SHV: 1600 (110 Bar)

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NPT
Multipin & Coaxial Connector

Pressure

MIL-C-5015 Type1/2” NPTCONDUCTOR
QTY
AMPS
4610

Air Side Plugs

BNC, MHV & SHV
3/8” NPTPARTNUMBER1/2” NPT
1/2” NPT
1/2” NPT

10184-08-A†
10185-08-A
10094-11-A

777NO.
CONTACTSVOLTAGEDCCONDUCTOR
AMPS

TYPE

4610700 V
700 V
700 V

131313Air Side
Air Side
Air Side

COAXIALTYPE

Air Side Plugs

INSTALLATIONCONDUCTORAMPS
MATERIALDIMENSIONS
HL
1.4 [36]
1.4 [36]
1.4 [36]

4.4 [112]
4.4 [112]4.4 [112]PART
NUMBER
15910-01-A†15911-01-A
15912-01-A

DIMENSION APARTNUMBER
9263-04-A†9263-03-A
9263-06-A

BNC
MHVSHV

3.6
3.6
16.5

304 Stn. Stl.
304 Stn. Stl.
Nickel0.90 [23]0.90 [23]
1.2 [30]TYPE

VOLTAGEDCCONDUCTORAMPS

DIMENSIONSH
LAir Side
Air Side
Air Side

500 V
5 kV
5 kV

51010

0.56 [14]0.56 [14]0.56 [14]1.1 [28]
1.5 [38]
1.8 [46]G.1

DESCRIPTIONPARTNUMBER

BNC Plug
MHV Plug
SHV 5 kV Plug

7116-02†7116-01
8058-01††Shown in photo.

PRESSURE

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ew

Pressure

CeramTite™

NG.2

CeramTite™ High Pressure Feedthroughs
CeramTite™ feedthroughs consist of a Nickel plated
Alumel pin bonded directly to the threaded bolt using
our proprietary glass-ceramic sealing process. These
hermetically sealed feedthroughs utilize an O-ring crush
seal to make the external pressure seal. The hex bolt
side is designed to be the high pressure side of thefeedthrough. The temperature rating of the assemblyis limited by the O-ring material. Viton® is the standard
O-ring material used and this material has a high end
temperature capability of 205° C.
CeramTite™ feedthroughs are typically used for low
power or instrumentation applications in pressure vessels or oil systems. 100% of CeramTec’s Ceramaseal®
products are helium leak tested to meet or exceed 10-10
atm-cc/sec (He). Custom bolt sizes, pin configurations orsizes are available upon request.

Single Pin
82˚.83 [21]

Ø.285
[7.2]

Mounting Detail.25 [6.4]
.040
[1.0]

Nickel Plated
Alumel Conductor5/16" HEX

Alumina Ceramic
Insulator.09 [2.3].23 [5.8]

10-32 UNF-2A

Two Pin82˚Ø.458[11.6]*.83 [21].25 [6.4]
Ø.040
[1.0]

Ø.125 [3.2]Mounting Detail

Nickel Plated
Alumel Conductor
9/16" HEX

Alumina Ceramic
Insulator.09 [2.3]

PRESSURE

3/8-24 UNF-2A.25 [6.4]

Specifications
Material
Body: 316 Stainless steel
O-ring: Viton®
Pin: Alumel (Nickel Plated)
Insulation: Glass-ceramic & Alumina ceramic
Magnetic Materials: Yes

Three Pin
82˚Ø.458[11.6].83 [21]
Mounting DetailVoltage Rating 500 V DC

.25 [6.4]
Ø.135 [3.4]

Ø.040
[1.0]

Current Rating 4 Amps per pin
Temperature Range* -269˚ C to 450˚ CViton® O-ring: -25˚ C to 205˚ C
Pressure @ 20°C

Nickel Plated
Alumel Conductor

Single Pin: 25,000 (1724 Bar)
2 Pin: 20,000 (1379 Bar)
3 Pin: 20,000 (1379 Bar)

Alumina Ceramic
Insulator
3/8-24 UNF-2A.25 [6.4]*Maximum temperature ratings listed are for bakeout only. The insulation
resistance at these temperatures may not be suitable for all applications.

188

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Single Pin
10-32

ew

CeramTite™

NPressure

INSTALLATIONHEXTHREADPARTNUMBER

1

5/16

10-32

50039-01-A

2 Pin
3/8-242

9/16

3/8-2450040-01-A

3 Pin
3/8-243

9/16

3/8-2450041-01-A

NO.
PINSContacts

TYPE

MATERIAL

0.040 Crimp Contacts

Copper Alloy - Gold Flash

Crimp Tool

DESCRIPTIONPARTNUMBER

Accepts wire up to 0.040 [1.0]16167-03-A†For 0.025” - 0.075” Crimp Diameters

2840-05

G.2*Contacts priced and sold in packages of 5. †Shown in photo. See the Accessories section for more information on all accessories.

PRESSURE

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189

New

G.3

Pressure

Tec-Seal™

Tec-3

Tec-Seal™ High Pressure Feedthroughs

The temperature rating of the assembly is limited by
the O-ring material. Viton® is the standard O-ringmaterial used and this material has a high end temperature capability of 205° C. 100% of CeramTec’s
Ceramaseal® products are helium leak tested to meetor exceed 10-10 atm-cc/sec (He). Custom bolt sizes, pinconfigurations or sizes are available upon request.
Tec-1

82˚ X Ø.347 [8.8]

Ø.313
Ø.312
[7.9]

.190
[4.8]

1.87 [47]82˚.40 [10]

.343
[8.7]

.37 [9].12 [3]

MountingDetail

Ø.13
[3.3]

Gold Plated
52% Nickel IronConductor

Ø.062±.001 [1.6]Tec-4

3/8" HEX
007 O-Ring

1/4 28 UNF-2A

82˚ X Ø.285 [7.2]

Ø.250
Ø.251
[6.4]

.170
[4.3]

Mounting Detail1.69 [43]

Ø.062
[1.6]

Tec-5

.40[10].25 [6].12 [3]

Ø.09
[2.3]

.44
[11]

.37
[9]1/4" HEX
006 O-Ring

Gold Plated
CRS Conductor

10-32 UNF-2A

82˚

1.69 [43]

Ø.285
[7.2]

.40
[10]

.25 [6].12 [3].44 [11].37 [9]

MountingDetail
Ø.09
[2.3]

32

1.88 [48].42 [11]
Mounting Detail.44 [11].37 [9]32

Tec-Seal™ feedthrough products are built for extreme
downhole environments. These rugged hermetic
feedthroughs are rated for pressures up to 25,000 psi
and temperatures up to 250° C. The Tec-Seal™ embedded seal design will maintain the seal integrity even if
one or both sides of the feedthrough are sheared off,
thus protecting the bulkhead electronics from damage.
These standard designs are also built for dual pressure
applications, which means that they can take 25,000 psi
These designs are successfully tested to 50,000 psig but
the assembly pressure rating is limited by the o-ring.
There isn’t a more reliable or durable fee
feedthrough available.

.38 [10].44 [11]

Tec-6.37 [9]

1/4" HEX
006 O-Ring

10-32 UNF-2A

82˚ X Ø.473 [12]

Ø.437
Ø.438
[11]

.13 [3]Gold Plated
CRS Conductor

Ø.062[1.6]32.250[6.4]

Mounting DetailGold Plated
52% Nickel Iron
Conductor

Ø.062±.001[1.6]

3/8-24 UNF-2A

011 O-Ring.48 [12]

3/8" HEX
008 O-Ring

Tec-2

Ø.17
[4.3]

Gold Plated
CRS Conductor

Ø.093
[2.4]

82˚ X Ø.347 [8.8]
Ø.313
Ø.312
[7.9]

.50 [13].12 [3]

1/4-28 UNF-2A

1/2" HEX

Specifications

.203
[5.2]

Materials
1.95 [50]32

PRESSURE

Ø.13 [3.3]2.33 [59].57 [14].48 [12].44 [11].44 [11]

Mounting Detail.36 [9].37 [9].12 [3]

Body: 304 Stainless steel
O-ring: Viton®
Pin: See table
Insulation: Alumina ceramic & glass-ceramic
Magnetic Materials: Yes
Voltage Rating See tableØ.11 [2.7]Ø.062±.001[1.6]Gold Plated
52% Nickel Iron
Conductor
1/4-28 UNF-2A

Current Rating See table
1/4" HEX
008 O-Ring

Temperature Range -269˚ C to 250˚ CViton® O-ring: -25˚ C to 205˚ C
Pressure @ 20°C 25,000 PSIG (1724 Bar)

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Tec-Seal™

Tec-1

Tec-2

Tec-3

Tec-4

Tec-5

Contacts

INSTALLATIONHEXTHREAD

VOLTAGEDCCONDUCTORAMPS MATERIALPARTNUMBERPRICE

3/8

1/4-28

1.5 kV

7.5

52 Nickel Iron

50015-01-A

$120

1/4

1/4-28

1.5 kV

7.5

52 Nickel Iron

50019-01-A

$120

3/8

1/4-28

1.5 kV

7.5

52 Nickel Iron

50020-01-A$140

1/410-32

1.5 kV

10

Cold Rolled Steel

50054-02-A$120

1/410-32

1.5 kV

10

Cold Rolled Steel

50065-01-A

$120

1/2

3/8-245 kV

20Cold Rolled Steel

50060-01-A$120

DESCRIPTIONPARTNUMBER

PRICE

Nickel Alloy

Accepts wire up to 0.062 [1.6]0821-01-A†Beryllium Copper
Beryllium Copper
Beryllium Copper
Beryllium Copper

Accepts wire up to 0.062 [1.6]
Accepts wire up to 0.062 [1.6]
Accepts wire up to 0.050 [1.3]
Accepts wire up to 0.094 [2.4]
For 0.025” - 0.075” Crimp Diameters2044-02-A
7332-03-A
7429-01-A
7332-04-A
2840-05

TYPE
0.062 Crimp Contacts
0.062 Crimp Contacts
0.062 Barrel Type Contacts
0.094 Set Screw Type Contacts
0.094 Barrel Type Contacts
Crimp Tool

MATERIAL*Contacts priced and sold in packages of 10. †Shown in photo. See the Accessories section for more information on all accessories.

sales@ceramtec.com

G.3

www2.ceramtec.com

TEL: (864) 682-3215

$75*
$35*
$45*
$40*
$45*
$400

PRESSURE

Tec-6New

Pressure