O-Ring Materials and Applications

MATERIAL HARDNESS TEMP. COMPATIBLE WITH APPLICATIONS NOT COMPATIBLE WITH

Ethylene Propylene 70 Durometer-55°– 135°C Alcohols Ebullient cooled engine cooling systems Aromatic fuels Diester lubricants

Diene Modified -67°– 275°F Automotive brake fluids Petroleum fluids

(70) (EPDM) Hot, cold water Ketones Ozone and sunlight Phosphate ester fluids Silicone fluids Some dilute acids Steam (200 Degree C max) Steam (400 Degree F max) Fluorocarbon 75 Durometer-40°– 175°C Diester lubricants High temperature applications Amines (75) (FKM) -40°– 350°F Halogenated hydrocarbons (above 100 Deg.C) requiring resistance to air, Brake fluids Highly resistant to compression set fuels, lubricants and hydraulic fluids Engine Coolant Fire Resistant Fluids

Petroleum fluids Ketones Steam

Phosphate ester fluids Silicone fluids Water

Some acids Fluorocarbon 90 Durometer-40°– 175°C Diester lubricants High pressure, high temperature Amines (90) (FKM) -40°– 350°F Halogenated hydrocarbons (above 100 Deg.C) applications requiring resistance to air, Brake fluids Highly resistant to compression set fuels, lubricants and hydraulic fluids Engine Coolant Petroleum fluids ORFS, STORS seals Fire Resistant Fluids Ketones Steam

Phosphate ester fluids Silicone fluids Water

Some acids

MATERIAL HARDNESS TEMP. COMPATIBLE WITH APPLICATIONS NOT COMPATIBLE WITH

C Abrasion resistant Automotive air conditioner seals Aromatic and oxygenated gasolines °– 121 ° Highly Saturated 78 Durometer-40 F Diesel fuels High temperature flex boot seals Automotive and aircraft brake fluids Nitrile (78) (HNBR) -40 °– 275 ° Diester lubricants High temperature power steering seals Chlorinated hydrocarbons Ozone Higher temperature hydraulic seals Ethers Petroleum oils, greases Middle cylinder liner seals Ketones Refrigerant HFC - 134a (Non-Freon) Phosphate ester fluids Silicone fluids Steam Water base engine coolants C Alpha-Olefin base synthetic lubricants Ambient temperature fuel handling Automotive and aircraft brake fluids °– 100 ° Nitrile (60) 60 Durometer-40 F Ethylene Glycol High and low pressure LPG service High levels of ozone -40 °– 212 ° Petroleum base lubricants Hydraulic fluids Ketones Silicone oils and greases Power steering seals Phosphate ester fluids Water, water base engine coolants Radiator thermostat seals UV Light C Alpha-Olefin base synthetic lubricants Ambient temperature fuel handling Acetone °– 100 ° Nitrile (70) 70 Durometer-40 F Ethylene Glycol High and low pressure LPG service Automotive and aircraft brake fluids -40 °– 212 ° Hydrocarbon fuels Hydraulic fluids Chlorinated hydrocarbons Petroleum base lubricants Power steering seals High levels of ozone Silicone oils and greases Radiator thermostat seals Ketones Water, water base engine coolants Nitro hydrocarbons Phosphate ester fluids Strong acids UV light

MATERIAL HARDNESS TEMP. COMPATIBLE WITH APPLICATIONS NOT COMPATIBLE WITH

C Abrasion resistant Ambient temperature fuel handling Automotive and aircraft brake fluids °– 100 ° Nitrile (90) 90 Durometer-40 F Alpha-Olefin base synthetic lubricants High and low pressure LPG service High levels of ozone -40 °– 212 ° Ethylene Glycol Hydraulic fluids (to 10,335 kPa/1500 psi) Ketones Hydrocarbon fuels Power steering seals Phosphate ester fluids Petroleum base lubricants Radiator thermostat seals Strong acids Silicone oils and greases UV light Water, water base engine coolants ORFS.STORS seals C Excellent resistance to oxidation Power steering seals Aromatic hydrocarbons °– 135 ° Polyacrylic 75 Durometer-12 °– 275 F Excellent resistance to ozone Transmissions Brake fluids (75) (ACM) +10 Excellent resistance to sunlight & UV light Chlorinated hydrocarbons Ethylene Glycol

Petroleum base fluids Methanol

Transmission fluids power steering fluid Other alcohols Type “ R ” Phosphate ester fluids Water or steam C Air Electrical system seals Acetone Silicone (70) 70 Durometer-46 °– 150 ° F Diacetone alcohol High temperature air seals Aromatic hydrocarbons -50 °– 300 ° Ethylene glycol High temperature static grease seals EP oil Extreme high/low temperatures Fuel oil Gasoline

High aniline point oil Ketones Low aniline point oils Petroleum oils Steam & hot water

Iso-butyl alcohol Ozone & UV light Polyglycol C Ozone Brake seals Water Urethane (90) 90 Durometer -40 °– 93 ° F Petroleum base lubricants and Hydraulic cylinder seals Water base hydraulic fluids °– 200 ° -40 hydraulic fluids/fuels UV light