Gaskets - Chemical Compatibility Chart POLYMER Nitrile Elastomer Fluora- elastomer Platinum Cured Silicone Elastomer Peroxide Cured Silicone Elastomer Ethylene-Propylene Diene Monomer PolyTetra Fluoro Ethylene Poly Steel Polymer ASTM D-1418 Designation NBR FKM VMQ VMQ EPDM PTFE PTFE/316L Common Trade Names Buna-N Viton Fluorel Silastic Elastosil Silastic Elastosil Dutral Nordel Fluoropolymer (PTFE)   Typical Hygienic Industry Designate U SFY RXPX X EPDM G GTS Hygienic Color Code Red Yellow & White Remains Clear Pink Green X3 Remains White Remains Gray Specific Gravity (Polymer) 1 1.8 1.1 1.1 0.85 2.13 2.25 Hardness Shore A Durometer (S) 30-95 80 or 75 80 or 70 70 70 55-Shore D 65-Shore D Maximum Tensile (PSI) 3000 2000 1200 1200 2500 4000 4600 Heat Resistance Intermittent 240ºF 410ºF 580ºF 540ºF 300ºF 450ºF 578ºF Continuous 210ºF 380ºF 490ºF 460ºF 260ºF 400ºF 526ºF Low Temperature Resistance -65 -20 -85 -95 -70 -350 -370 Abrasion Resistance Good Good Fair Fair Fair Fair Fair Ozone Resistance NR Excellent Excellent Excellent Excellent Excellent Excellent Radiation -Gamma Resistance Good Fair Fair Fair Excellent Excellent Excellent Recovery after Distortion Good Good Good Good Fair/Good Not Recommended Fair Tear Resistance HOT Fair Fair Fair Fair Fair Excellent Excellent Tear Resistance COLD Fair Fair Fair Fair Good Excellent Excellent Acids, Dilute Good Excellent Good Good Good Excellent Excellent Alkalis Good Good Excellent Excellent Excellent Excellent Excellent Alcohol - Glycols Excellent Good Excellent Excellent Excellent Excellent Excellent Animal Oils & Fats Excellent Excellent Good Good Fair Excellent Excellent Soaps, Bleaches, Detergents Fair/Good Good Fair Fair Excellent Excellent Excellent Steam Fair Fair Good Good Excellent Good Excellent Vegetable Oils Excellent Excellent Excellent Excellent Good Excellent Excellent Water Good Excellent Fair Fair Excellent Excellent Excellent