Buna-N Roll Material Buna-N Shape Roll Grade Flame-Resistant Length 5 7/12 ft Width 40 in Thickness 1/4 in Backing Type Plain Cell Type Closed Cell Adhesive Type Plain Backing Number of Adhesive Sides 0 Color Black Density 8 lb/cu ft Maximum Temperature 160 Degrees F Minimum Temperature -20 Degrees F Tensile Strength 70 psi Texture Smooth Firmness @ 25 Percent Deflection 3.5 psi Material Skin None Standards ASTM D1056/2B1/SBE41/II Chemical Resistance Good Oil Resistance Good