POLYMER |
Nitrile (NBR) |
Viton (FKM) |
Silicone (VMQ) |
Neoprene (CR) |
Ethylene-Propylene
(EPM/EPDM) |
Polytetrafluoroethylene (PTFE) |
Max Int Temp C |
130 C |
300 C |
300 C |
125 C |
150 C |
250 C |
Max Cont Temp |
100 C |
205 C |
205 C |
95 C |
130 C |
205 C |
Lowest Temp C |
-20 |
-20 C |
-60 to -80 C |
-35 C |
-50 C |
-5 C |
Oil Resistant |
Yes |
yes |
Yes |
Yes |
No |
Good |
Weather Resistant |
Yes |
yes |
Yes |
Yes |
Yes |
Good |
Hardness Range A |
40 to 100 |
50 to 95 |
40 to 80 |
30-90 |
30-85 |
65-90 |
Oxidation |
Good |
out standing |
Excellent |
Very good |
Excellent |
Excellent |
Ozone Weathering |
Fair |
Fair |
Very good |
Very good |
Out-standing |
Good |
Oil Resistance ASTM Oil 1 @ 20C |
Good |
Excellent |
Excellent |
Good |
Fair |
Excellent |
ASTM Oil 1 @ 100C |
Good |
Excellent |
Good |
Good |
Un-satisfactory |
Excellent |
ASTM Oil 3 @ 20C
|
Good |
Excellent |
Good |
Good |
Un-satisfactory |
Excellent |
ASTM Oil 3 @ 40C |
Fair |
Excellent |
Unsuitable |
Poor |
Un-satisfactory |
Excellent |
ASTM Oil 3@ 100C |
Good |
Excellent |
Good |
Good |
Un-satisfactory |
Exvellent |
Alcohol Resistance |
Good |
Good |
Good |
Good |
Good |
-------- |
Acetone Resistance |
Un-Satisfactory |
Unsuitable |
Fair |
Fair |
Good |
Good |
Benzene Resistance |
Un-Satisfactory |
Good |
Un-satisfactory |
Un-satisfactory |
Un-satisfactory |
Good |
Acid Resistance |
Good |
Excellent |
fair |
Good |
Good |
Good |
Bases Resistance |
---- |
Good |
Fair |
Fair |
Good |
Good |
Physical Strength |
Good |
Good |
Fair |
Good |
Good |
Good |
Compression Set |
Good |
Good |
Good |
Fair to Good |
Good |
Fair |
Tear and Abrasion |
Good |
Very Good |
Poor |
Good |
Good |
Very Good |
Resilience |
Good |
Fair |
Good |
Very Good |
Very Good |
Fair |
Gas Permeability |
Low |
Very low |
Fairly Low |
Low |
Fairly Low |
Fair |
Electrical Strength |
Poor |
Good |
Excellent |
Good |
Good |
Good |
Flame Resistance |
Poor |
Self-Extinguishing |
Good |
Self-Extinguishing |
Poor |
Good |
Water Resistance |
Fair |
Good |
Good |
Good |
Excellent |
Good |