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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

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