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| Material Selection Guide |
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Nitrile (BUNA- N)
Duro: 70 Standard
Temperature: -35oF to
+250oF |
Air, Water, Oils, Fuels, Gasoline, Engine Coolant, LPG, Hydraulic Actuator Seals, Hydraulic Pump Seals, Water Pump Seals, Carburetor Seals
Transmission Seals |
Acetone, Lube Oil,
Auto/Aircraft, Brake, Fluids, Automatic Transmissions, Military Hydraulic Systems |
Good wear resistance
Good compression set resistance, Good short-term resilience, Good permeation resistance |
Neoprene®/ (Chloroprene)
Duro: 70 Standard
Temperature: -40oF to +225oF |
Alcohol, Engine Coolant, Vegetable Oil, Animal Fats, Ammonia Refrigerants |
Petroleum Oils & Fuels, Dilute Acids, Toluene, Acetone |
Good resistance to flexing, tear, sunlight & weathering |
EPDM / EPM
(Ethylene Propylene)
Duro: 70 Standard
Temperature: -65oF to +250oF |
Water, Alcohol, Acetone, Steam, Brake Fluids, Some Acids and Base Ketones |
Petroleum Oils & Fuels, Toluene |
Good heat resistance, Resistance to sunlight & weathering, Poor resistance to Petroleum Oils & fuels |
Silicone (VMQ)
Duro: 70 Standard
Temperature: -65oF to +500oF |
Dry heat, Alcohol, Vegetable Oils, Oxygen, Sunlight, Ozone, Weathering Odorless & Non-Toxic |
Petroleum Oils & Fuels, Acids, Silicone Oils, Brake Fluids |
Broad temperature range, less favourable tensile, tear & abrasion resistance |
Hypalon® (CSM)
Duro: 70 Standard
Temperature: -40oF to +200oF |
Animal Fats, Vegetable Oils, Engine Coolant, Freon 12, Freon 22, Refrigeration Oils |
Petroleum Fuels Acetone, Ethyl Acetate, Trichloroethane |
Exceptionally resistant to sunlight, ozone and weathering. For most applications neoprene does an equal job at a lower cost |
Polyacrylate (ACM)
Duro: 70 Standard
Temperature: -20oF to +350oF |
Automatic Transmission Fluid, Power steering fluid |
Water, Toluene, Engine Coolant, Acetone |
Automatic transmission seals meets many automotive specifications |
Hydrogenated Nitrile (HNBR)
Duro: 70 Standard
Temperature: -40oF to +325oF |
Engine Coolant, Oxygen/ Ozone, Steering Fluid, Sour Crude, Refrigerants |
Alcohol, Containing Fuels |
Better high temperature and compression set resistance than standard Nitrile, Resists chemicals, amines, hydrogen sulfide and ozone that typically attack standard Nitrile compound |
Viton® (Fluorocarbon)
Duro: 75 Standard
Temperature: -20oF to +400oF |
Vacuum, Moist Acids, and Chemicals, Silicone Oils, Petroleum Oils, Di-Easter Lubricants, Halogenated Hydrocarbons |
Acetone, Skydrol, Ketones, Amines, Ethyl Acetate, Hot Water & Steam |
Excellent high temperature capability. Can withstand brief intermittent Exposure to 600o. Low compression set, Good resistance to a wide variety of chemicals |
Fluorosilicone (FVMQ)
Duro: 70 Standard
Temperature: -80oF to +350oF |
Petroleum Oils, Jet Fuel, Gasoline, Alcohol, Dry Heat |
Acetone, Ethyl Acetate, some acids, amines |
Slightly narrower temperature range than silicone rubber, but with excellent resistance to a wider variety of fluids |
Teflon® (P.T.F.E.)
Temperature: -250oF to +450oF |
Chemical Resistance,
Low coefficient of friction |
Molten alkaline metals |
Teflon is impervious to virtually all fluids and gases |
Polyurethane (PU)
Duro: 70 to 90 Standard
Temperature: -65oF to + 200oF |
Drive Belts,
Some Petroleum Oils,
Oxygen/Ozone
Chlorinated Solvents |
Ketones
Acids
Water |
Excellent abrasion and extrusion resistance. Poor compression set and chemical resistance. |
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| VITON is trademark of DuPont Performance Elastomers.
Neoprene & Teflon are registered trademark of DuPont.
Hypalon is registered trademark of DuPont. |
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