Elastomer for High Concentration
Chemicals and Ozone
ARCURYTM Series
1. Introduction
In the manufacturing process of various products, all materials used are required to be highly functional and clean.
Particularly in the manufacture of high-performance parts, the cleaning chemicals and ozone used are required to be ofincreasingly higher purity. At the same time, the control of particulates, metal contamination and organic matter
generated from cleaning wetted parts is becoming more stringent.
In response to these increasing demands, we have developed a lineup of sealing materials with excellent chemical resistanceand ozone resistance as well as excellent purity. In this report, the outline and features of each product are introduced.

2. Product Overview
Summer 2021
No.41

Table1

Basic properties of ARCURYTM

Product
name

ＡＲＣＵＲＹ-ＡＤ（arcley AD）

ARCURY-AL（arcurea AL）

ARCURY-OZT（arcurea OZT）

ARCURY-OZW（arcley OZW）

Features

It is excellent in purity
because of its excellent
resistance to acidic solutions
and reduced amount of elutionof metals and organics.

Resistance to alkaline solutions
such as ammonia, which has
been difficult to use withconventional fluororubber, isexcellent.

It is excellent in purity becauseof its excellent resistance toozone gas and ozone water andits reduced amount of elution ofmetals and organic substances.

Resistance to ozone gas andozone water is excellent.
Compared with OZT, the heat
resistance is improved.

Appearancecolor

Dark amber transparent

Black

Transparent

WhiteHardness（Shore A）

67

75

60

68

Tensilestrength（MPa）

12.0

23.8

17.0

13.0

Elongation
（%）

190

220

580

230

100% stress（MPa）

3.3

7.5

1.7

3.4

CompressiveSet（%）

25 ＊1）31 ＊2）

48 ＊2）

37 ＊1）All values in the table are measured values, not standard values.
＊１)Compression set: 200℃ for 72hrs, Compression of25%, AS568-214 Using O-rings ＊２)Compression set: 150℃ for 72hrs, Compression of25%, AS568-214 Using O-rings

ARCURY−AD

ARCURY−AL
Figure127

ARCURY−OZTTM

Photographs of ARCURY

products

ARCURY−OZWProduct Introductions

3. Product Features3-2）Chemical resistance3-1）Purity
Table2 A mount of eluted metal elements in fluoric acidand ultrapure water

ARCURY-AD【Test conditions】
HCl（35%） 40℃× 168hr
40℃× 168hr
HNO（65%）3（ng/ml）

Metallicelement

ARCURY-ADFFKM ofCompany A

FFKM ofCompany B

Na

0.6

1.6

1.3

K

0.6

2.8

0.4

Ca

0.9＜0.50.7Mg

0.9

0.6

0.5

Al

6.7

1321Fe2.05.8

3.5

Cu

＜0.5

＜0.5＜0.5

Pb

＜0.5

＜0.5

＜0.5

Meter

＜12.7

＜25.3＜28.4

FFKM ofCompany A

FFKM ofCompany B

Na

0.6

2.1

0.5

K

0.6

1.8

＜0.5Ca0.6

0.6＜0.5Mg＜0.50.9＜0.5Al＜0.59.818Fe

＜0.5

3.4

0.6

Cu

＜0.5＜0.5＜0.5Pb＜0.5＜0.5＜0.5Meter

＜4.3

＜19.6

＜21.6

ARCURY-AD

General FKM【Test conditions】
40℃× 168hr
NH（35%）
3
NMP
80℃× 168hr

Figure2

NH（30%）3

NMP

ARCURY-AL

General FKM

Summer 2021

ARCURY-AD

HNO（65%）3

ARCURY-AL（ng/ml）

Metallicelement

HCl（35%）

Volume change rate（%）

Ultrapure water（80℃ ×30days）


Volume change rate（%）

Fluoric acid（25 ℃×30 days） No.41

Rates of change in volume after
immersion in each solution3-3）Surface condition after ozone gas exposure test
Table3

Photographs of the surface before and after exposure to ozone gas

Before the test

After the test
Exposure time：2000 hours
Concentration：160g/Nm3
Temperature：20℃

28

Elastomer for High Concentration Chemicals and Ozone

ARCURYTM Series3-4）Surface condition after ozone water immersion test
Table4

Photographs of the surface before and after exposure to ozone water

Before the test

After the test
Immersion time：2000 hours
Concentration：40mg/ℓ
Temperature：20℃

3-5）Change in hardness

Summer 2021

Change in hardness（point）

No data
due to dissolution

Test conditions
Ozone gas
Exposure time：2000 hours
Concentration：160g/Nm3
Temperature：20℃
Ozone water
Immersion time：2000 hours
Concentration：40mg/ℓ
Temperature：20℃

No.41
Figure3

Change in hardness after exposure to ozone gas and immersion in ozone water

4. Product Applications
The ARCURYTM Series is expected to be used for thefollowing applications:1）Seals for flange pipes, chemical containers and pipe
joints of cleaning lines in chemical plants.
2）Seals for equipment such as ozone generators andto solve the problems which existing products have.

6. References
1）T atsuhiro Oshita: Valqua Technology News, No.4, 1516（2002）2）V ALQUA: Elastomer Product Catalogue, No.MA06, 9ozone cleaning equipment.

（2020）

5. Conclusionです。

※ "ARCURY" is a trademark of
VALQUA, Ltd.

It is anticipated that sealing materials will be required tomeet ever higher requirements. The ARCURYTM series,
introduced here, has excellent chemical and ozone
resistance, and we hope that it will be used in the future
29

Hiromasa Muraki
Technical Solution GroupH&S Sales Division