O-Ring Comparison Chart


1 = Recommended    2 = Satisfactory   3 = Poor   4 = Marginal   5 = Not Recommended

2.gif (475 bytes) 3.gif (456 bytes) 4.gif (535 bytes) 5.gif (511 bytes) 6.gif (722 bytes) 7.gif (618 bytes) 8.gif (582 bytes) 9.gif (529 bytes) 10.gif (618 bytes) 11.gif (621 bytes) 12.gif (631 bytes) 13.gif (659 bytes) 14.gif (456 bytes) 15.gif (588 bytes) 16.gif (531 bytes) 17.gif (733 bytes) 18.gif (646 bytes) 19.gif (1187 bytes) 20.gif (1385 bytes)
   Buna-N (NBR)

A

120

-37

4

5

4

4

2

2

2

4

1

3

5

2

5

4

2

A

A
   Viton®

D

200

-26

3

4

1

1

1

2

1

2

1

2

4

3

2

2

1

A

N/A
   Silicone

D

200

-80

4

4

1

1

2

4

4

5

4

5

5

5

5

5

5

A

N/A
   EPDM

C

145

-62

1

4

1

1

2

2

2

2

5

5

1

3

5

5

1

A

A
   Kalrez®

H

320

-20

1

2

1

1

2

2

2

1

1

1

1

1

1

1

1

N/A

N/A
   Simriz®

G

320

-20

1

2

1

1

2

2

2

1

1

1

1

1

1

1

1

N/A

N/A
   Chemraz®

H

320

-20

1

2

1

1

2

2

2

1

1

1

1

1

1

1

1

N/A

N/A
   Aflas

E

200

-20

2

3

1

1

2

2

2

2

1

5

2

3

2

3

1

N/A

N/A

1 = Recommended    2 = Satisfactory   3 = Poor   4 = Marginal   5 = Not Recommended

1.gif (968 bytes) 2.gif (475 bytes) 3.gif (456 bytes) 4.gif (535 bytes) 5.gif (511 bytes) 6.gif (722 bytes) 7.gif (618 bytes) 8.gif (582 bytes) 9.gif (529 bytes) 10.gif (618 bytes) 11.gif (621 bytes) 12.gif (631 bytes) 13.gif (659 bytes) 14.gif (456 bytes) 15.gif (588 bytes) 16.gif (531 bytes) 17.gif (733 bytes) 18.gif (646 bytes) 19.gif (1187 bytes) 20.gif (1385 bytes)
   Teflon® (Virgin)

D

230

-156

5

5

1

1

5

2

2

1

1

1

1

1

1

1

1

N/A

N/A
   FEP Encapsulated

E

145

-23

5

5

1

1

2

2

2

1

1

1

1

1

1

1

4

N/A

N/A
   PFA Encapsulated       (Stainless Steel)

J

260

-250

5

5

1

1

2

2

2

1

1

1

1

1

1

1

4

N/A

N/A
   Fluorosilicone

D

175

-60

5

5

1

1

3

4

4

3

3

1

3

3

2

2

3

N/A

N/A
   Urethane

C

105

-53

5

5

1

1

4

1

1

5

2

3

5

5

5

5

1

N/A

N/A
   HNBR

C

160

-40

5

5

2

2

2

2

2

4

1

5

5

5

1

1

2

N/A

N/A
   Polyacrylate

C

175

-28

5

5

3

3

3

3

1

5

4

5

5

1

1

5

2

N/A

N/A
   Neoprene

C

105

-40

5

5

2

2

3
2

2

5

2

5

5

3

3

2

1

N/A

N/A
   Butyl

C

90

-53

5

5

1

2

3

2

1

2

4

5

5

5

5

5

2

N/A

N/A
   Hypalon

C

90

-40

5

5

1

2

3

2

2

3

4

5

5

5

5

2

2

N/A

N/A

Selecting an O-Ring material for a specific application depends on many important criteria including:
Service Conditions (media to be sealed, temperature range, pressure/vacuum range, dynamic motion)
Design Attributes (component geometry, desired service life, installation considerations, tolerances)

This guide is intended for general reference use only.

The materials and compound numbers listed are the most commonly used.
There are numerous compound variations designed for specific applications.
For demanding applications, please provide all the details to our application engineers for a recommendation.


Viton® and Kalrez® are registered trademark of DuPont Performance Elastomers
Teflon® is a registered trademark of DuPont
Chemraz® is a registered trademark of Green Tweed.
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