Material/ Material

Material

O-Ring Materials-EPDM,EPT

With ethylene and propylene copolymer (terpolymer) chemical structure. Ethylene Propylene Rubber features are anti-aging, ozone resistance, weather resistance, chemical resistance, abrasion resistance, water resistance, alcohol resistance and ketones, not for food use or exposure to aromatic hydrogen. CNL EPDM O-Ring Seals specifications and compatibility.

Operating temperature: –65 to +250 °F

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Rubber type
(ASTM Abbreviation )
Ethylene Propylene Rubber
EPDM, EPT
Chemical structure Ethylene and propylene copolymer 
(terpolymer)
Main feature Anti-aging, ozone resistance, weather resistance, chemical resistance, abrasion resistance, water resistance, alcohol resistance and ketones, not for food use or exposure to aromatic hydrogen.
Pure rubber properties proportion
Muni viscosity ML1+ (100℃)
0.86 ∼ 0.87
50 ∼ 150
Physical properties of synthetic rubber Possible JIS hardness range
General temperature range(℃) 
Special temperature range(℃)
Tensile strength (kg/cm2)
Elongation (%)
Anti-elastic
Cracking
Wear resistance
Bending resistance
40 ∼ 90
-40 ∼ 130
-50 ∼ 150
50 ∼ 200
800 ∼ 100



Various properties of synthetic rubber lubricating oil Engine oil
Gear Oil
Motor oil
Shaft lubricant
Refrigeration oil
Butter
Lithium oil
Oyster sauce
X
X
X
X
X
X
X
Working oil Pot shaft oil
Oil + Water emulsion system
Water + Glycol
Phosphate ester
Si
Brake Fluid
Gear oil
X





X
Fuel oil Light oil、kerosene
Heavy oil
Gasoline
X
X
X
Water Water、Warm water
Water vapor、Hot water
Antifreeze water
Water cutting oil



Drug

Hydrochloric acid 20%
Sulfuric acid 30%
Nitric acid 10%
Caustic soda 30%
Benzene
Trichloroethylene
Alcohol
Vinyl glycerol
Liquid fat
Alcohol
Ether
Ketone (MEK)
Acetic acid、Ethyl ester





X
X


X



Gas LPG
Urban gas
Ozone
Freon 12
Freon 22
X



Other

Food Sanitation Law
Vacuum、Atmosphere 10mm kg 
10-4 ~ 10-9



 
The main purpose Wire covering, automotive windshield, window frame, water vapor radiator.
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