General purpose materials are suitable for applications where no unusual chemical, oil or temperature resistance is required
General Purpose Elastomers
Butyl
EPDM
Natural
SBR
ASTM D - 2000 Designation
AA, BA
BA, CA
AA
AA, BA
Max. Tensile
3000
2500
3500
3000
Max. Elongation
850
600
700
600
Compression Set Resistance
Fair - Good
Very good
Good
Fair - Good
Resiliance
Fair
Good
Excellent
Good
Tear/Chip Resistance
Good
Fair
Excellent
Fair
Abrasion Resistance
Fair
Good
Excellent
Excellent
Service temp. (°F)
-60 to 225
-60 to 350
-60 to 175
-50 to 225
"Rooftop" Aging
Excellent
Excellent
Poor
Poor
Ozone Resistance
Excellent
Excellent
Fair
Fair
Oxidaton Resistance
Excellent
Excellent
Fair
Good
Solvent Resistance
Aliphatic HC
Poor
Poor
Poor
Poor
Aromatic HC
Poor
Poor
Poor
Poor
Oxygenated HC
Good
Excellent
Poor
Poor
Lacquer Solvents
Fair
Fair
Poor
Poor
Acid Resistance
Dilute
Excellent
Excellent
Very good
Good
Concentrated
Very good
Very good
Fair
Fair
Gasoline/Oil Resistance
Poor
Poor
Poor
Poor
Animal/Veg. Oil Resistance
Excellent
Fair
Poor
Poor
Adhesion to
Metals
Good
Good
Excellent
Excellent
Fabrics
Good
Good
Excellent
Good
Noteworthy:
• Excellent gas impermeability/retention
• Excellent vibration damping/attenuation
• ozone and weather resistance
• Low swell in water & steam
• General purpose
• Excellent dynamic mechanical properties
• Good friction surface
• Low cost
• General purpose
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