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Common Name SBR, GRS
ASTM D-2000 Classification AA, BA
Military (MIL STD 417) RS
Chemical Definition Butadiene
General Characteristics
Durometer Range (Shore A) 30 - 100
Tensile Range (P.S.I.) 500 - 3000
Elongation (Max. %) 600
Compression Set Good
Resilience - Rebound Good
Abrasion Resistance Excellent
Tear Resistance Fair
Solvent Resistance Poor
Oil Resistance Poor
Low Temperature Usage (F°) 0° to -50°
High Temperature Usage (F°) to 225°
Aging Weather - Sunlight Poor
Adhesion to Metal Excellent
SBR is a low cost, non-oil resistant material. It has good water resistance and resilience up to 70 durometer; compression set becomes poorer with higher durometer; generally satisfactory for most moderate chemicals and wet or dry organic acids. SBR is not recommended for ozone, strong acids, oils, greases, fats and most hydrocarbons.