NK Rubber- The Symbol of Quality

N.K. Rubber Industries

Where Quality is Our Life Line

Matrial	Use With	Do Not Use With	Comments
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.