The Construction of Oil Seals

NBR

PA

(ACM)

SI

(VMQ)

VI

(FKM)

Temp. Range(°C)

-40 to 120

-20 to 150

-50 to 180

-30 to 200

Hardness(Shore)

70/80/90

70/80

75/85

70/80

Wear Resistance

O

^

X

+

Costs

most economical

3rd 

costly

2nd 

costly

highest

NBR

PA

(ACM)

SI

(VMQ)

VI

(FKM)

Inorganic Acids

^

^

^

^

Organic Acids

XX

X

X

^

Alkali

X

O

O

O

Salt

O

O

O

O

Alcohol

XX

O

O

O

Esters

XX

XX

^

XX

Phenol

XX

XX

O

^

Ketones

XX

XX

^

X

Material 

Code

ASTM

Chemical Name

Recommended

Special Grade

N

NBR

Butadiene Acrylonitrile

-35 to 100°C

* -40 to 120

H

HNBR

Hydrogenated NBR

-40 to 150°C

P

ACM

Polyacrylate Rubber

-20 to 150°C

*-30 to 175

A

AEM

Ethylene Acrylate Rubber

-30 to 150°C

*-40

S

VMQ

Methyl Vinyl Silicone

-50 to 180°C

-55 to 200°C

V

FKM

Fluoroelastomer

-25 to 200°C

Material

Code

ASTM

Chemical Name

Recommended

SBR

Styrene Butadiene 

Rubber

-50 to 110°C

CR

Chloroprene Rubber

-40 to 110°C

EPDM

Ethylene Propylene 

Rubber 

-45 to 150°C

IR

Isoprene

-50 to 120°C

FVMQ

Fluoro Methyl Vinyl 

Silicone

-70 to 200°C

XNBR

Carboxylic Acrylonitrile 

Butadiene

-35 to 100°C

PTFE

Tetrafluoroethylene

-50 to 250°C

AU

Polyester Urethane 

Rubber

-40 to 90°C