Buna-N Cord Material Buna-N Diameter 1/2 in Length 10 ft Color Black Cell Type Closed Cell Density 17 lb/cu ft Firmness @ 25 Percent Deflection 9 to 13 psi Shape Round Tensile Strength 160 psi Texture Smooth Maximum Temperature 200 Degrees F Minimum Temperature -40 Degrees F Grade Standard Chemical Resistance Good Oil Resistance Excellent Standards ASTM D1056 2B3 Water Resistance Excellent Weather Resistance Good Abrasion Resistance Fair Compression Set 22 Percent