Polymer Natural SBR EPDM Nitrile CR Neoprene ECO Nitrile Hypalon CSM Acrylic ACM VMQ Silicone Viton FKM HNBR/ HSN Fluoro Silicone AFLAS Perflouro Elastomer International Code AA AA DA/CA BF/BG/BK BC/BE CH CE DF/DH FC/FE/GE HK DH/DK FVMQ/FK HK KK Max Int Temp oC 105oC 115oC 150oC 130oC 125oC 175oC 160oC 180oC 300oC 300oC 180oC 280oC 250oC 250oC Max Cont Temp 75oC 85oC 130oC 100oC 95oC 150oC 130oC 150oC 205oC 205oC 150oC 200oC 205oC 205oC Lowest Temp oC -60oC -55oC -50oC -20oC -35oC -20oC -25oC -20oC -60 to -80oC -20oC -40oC -60oC -5oC -5oC Oil Resistant No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Good Good Weather Resistant No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Good Good Hardness Range A 30-95o 40-95o 30-85o 40-100o 30-90o 50-90o 40-85o 50-85o 40-80o 50-95o 45-90o 40-80o 65-95o 65-90o Oxidation Fair Fair Excellent Good Very Good Good Excellent Excellent Excellent Out standing Excellent Excellent Excellent Excellent Ozone Weathering Poor Poor Out- standing Fair Very Good Good Out- standing Excellent Very Good Fair Out- standing Excellent Good Good Oil Resistance ASTM Oil No.1 @ 20 C Poor Poor Fair Good Excellent Good Good Excellent Excellent Excellent Excellent Good Excellent Excellent ASTM Oil 1 @ 100 C Un- satisfactory Un- satisfactory Un- satisfactory Good Good Good Good Excellent Good Excellent Excellent Good Excellent Excellent ASTM Oil 3 @ 20 C Un- satisfactory Un- satisfactory Un- satisfactory Good Good Good Good Excellent Good Excellent Excellent Good Excellent Excellent ASTM Oil 3 @ 100 C Un- satisfactory Un- satisfactory Un- satisfactory Good Good Good Good Excellent Good Excellent Fair Good Excellent Excellent ASTM Oil 3 @ 40 C Un- satisfactory Un- satisfactory Un- satisfactory Fair Poor - Fair Poor Unsuitable Excellent - Good Excellent Excellent Solvent Resistance 20 C                             Alcohol Good Good Good Good Good Poor Good Good Good Good Excellent       Acetone Fair Fair Good Un- satisfactory Fair   Un- satisfactory Un- satisfactory Fair Unsuitable Good   Un-satisfactory Good Benzene Un- satisfactory Un- satisfactory Un- satisfactory Un- satisfactory Un- satisfactory   Un- satisfactory Un- satisfactory Un- satisfactory Good Fair   Un-satisfactory Good Acid Fair Fair Good Good Good Good Very Good Poor Fair Excellent Good Good Good Good Bases Good Good Good - Fair   Good Poor Fair Good Good   Good Good Physical Strength Excellent Good Good Good Good Fair Good Good Fair Good Good Fair Good Good Compression Set Good Good Good Good Fair to Good Fair Fair Good Good Good Good Very Good Fair Fair Tear & Abrasion Excellent Good Good Good Good Good Good Good Poor Very Good Very Good Poor Very Good Very Good Resilience Excellent Good Very Good Good Very Good Fair Fair Poor Good Fair Fair Good Fair Fair Gas Permeability Poor Fairly Low Fairly Low Low Low Low Low Low Fairly Low Very Low Good Fair Fair Fair Electrical Strength Excellent Excellent Good Poor Good Good Good Fair Excellent Good Poor Good Good Good Flame Resistance Poor Poor Poor Poor Self- Extinguishing Fair Good Poor Good Self- Extinguishing Poor Good Good Good Water Resistance Very Good Good Excellent Fair Good Good Very Good Poor Good Good Very Good Very Good Good Good