Buna-N Sheet Sheet Adhesive Type Plain Backing Backing Type Non-Adhesive Color Black Durometer 80A Grade Military Material Buna-N Standards MIL-R-6855 Class 1 Grade 80 Maximum Temperature 250 Degrees F Minimum Temperature -30 Degrees F Overall Length 36 in Thickness Tolerance +/-0.022 in Overall Width 12 in Tensile Strength 1 800 psi Texture Smooth Overall Thickness 0.1875 in Abrasion Resistance Good Chemical Resistance Fair Oil Resistance Excellent Water Resistance Good