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Elastomers Comparison Of Properties
The chart matches the general rubber properties required in most O-ring applications with the capabilities of commonly used elastomers. Since no one elastomer is rated “excellent” for all properties, compromises are sometimes necessary when selecting an elastomer for a specific O-ring application. Start with the most critical properties to narrow your choices.
| Property |
Nitrile |
SBR |
Neoprene |
Ethylene
Propylene |
Fluorocarbon |
Fluorosilicone |
Polyarcrylate |
Polyurethane |
Silicone |
Kalrez |
Ozone
resistance |
P |
P |
GE |
E |
E |
E |
E |
E |
E |
E |
Weather
Resistance |
F |
F |
E |
E |
E |
E |
E |
E |
E |
E |
Heat
Resistance |
G |
FG |
G |
E |
E |
E |
E |
E |
E |
E |
| Chemical Resistance |
FG |
FG |
FG |
E |
E |
E |
P |
F |
GE |
E |
Oil
Resistance |
E |
P |
FG |
P |
E |
G |
E |
G |
PG |
E |
| Impermeability |
G |
F |
G |
G |
G |
P |
E |
G |
P |
E* |
Cold
Resistance |
G |
G |
FG |
GE |
FP |
GE |
P |
G |
E |
FP |
Tear
Resistance |
FG |
FG |
FG |
GE |
F |
P |
FG |
GE |
P |
F |
| Abrasion Resistance |
G |
G |
G |
GE |
G |
P |
G |
E |
P |
G |
| Set Resistance |
GE |
G |
F |
GE |
GE |
GE |
F |
F |
GE |
GE |
| Dynamic Properties |
GE |
G |
F |
GE |
GE |
P |
F |
E |
P |
GE |
| Acid Resistance |
F |
F |
FG |
G |
E |
FG |
P |
P |
FG |
GE |
| Tensile Strength |
GE |
GE |
G |
GE |
GE |
F |
F |
E |
P |
GE |
| Electrical Properties |
F |
G |
F |
G |
F |
E |
F |
FG |
E |
F |
| Water/Steam Resistance |
FG |
FG |
F |
E |
FG |
F |
P |
P |
F |
GE |
| Flame Resistance |
P |
P |
G |
P |
E |
G |
P |
P |
F |
F |
|
| E=Excellent |
G=Good |
F= Fair |
P=Poor |
E*=Special Compound Available |
