Buna-N Sheet Sheet Adhesive Type Plain Backing Backing Type Non-Adhesive Color Black Durometer 50A Grade Military Material Buna-N Standards MIL-G-1149 Type 1 Class 5 Grade 50 Maximum Temperature 250 Degrees F Minimum Temperature -30 Degrees F Overall Length 36 in Thickness Tolerance +/-0.026 in Overall Width 36 in Tensile Strength 1 500 psi Texture Smooth Overall Thickness 0.25 in Abrasion Resistance Good Chemical Resistance Fair Oil Resistance Excellent Water Resistance Good