EPDM Sheet Material EPDM Shape Sheet Grade Standard Length 12 in Width 12 in Thickness 1/4 in Backing Type Plain Cell Type Closed Cell Adhesive Type Plain Backing Number of Adhesive Sides 0 Color Black Density 18 lb/cu ft Maximum Temperature 275 Degrees F Minimum Temperature -90 Degrees F Tensile Strength 70 psi Texture Smooth Firmness @ 25 Percent Deflection 11 psi Material Skin None Flexibility Fair Standards ASTM D1056 2A3 FMVSS 302 Chemical Resistance Good