Ethylene propylene rubber is an elastomer which consists of ethylene and propylene monomers (ethylene propylene copolymer) and sometimes with an amount of a third (diene) monomer (ethylene propylene diene terpolymers). Ethylene propylene rubber has a temperature range of -50°C to +120°/150°C (-60°F to +250°/300°F), depending on the curing system.
The qualities of EPDM
EPDM is very reliable in the sealing world because of its excellent resistance to heat, water and steam, alkali, mild acidic and oxygenated solvents, ozone, and sunlight (UV). These compounds also withstand the effect of brake fluids and Skydrol and other phosphate ester-based hydraulic fluids. We do not recommend EPDM compounds for gasoline, petroleum oil and grease, and hydrocarbon environments.
Special EPDM compounds have good resistance to steam
EPDM Sulphur cured: inexpensive material for normal use, maximum temperature of +120°C (+250°F).
EPDM Peroxide cured: usable for hot water, steam, alcohols, ketones, engine coolants, organic and inorganic acids and bases. Not resistant to mineral oils, greases and fuels. For maximum temperatures of +150°C (+300°F).
We’ve created a several tools to assist our customers, by easing the selection of the most suitable material and dimensions of O-rings.
- O-ring Calculator: The O-ring calculator enables engineers to specify an O-ring groove for any given O-ring or vice versa calculates the best suitable size O-ring for any given groove. The calculator takes all relevant parameters into account like thermal and or chemical swell of the rubber material and thermal expansion of mating construction parts materials
- O-ring Weight Calculator: This tool enables engineers to identify the weight of a batch of O-rings. The weight of high volumes of O-rings is important to determine freight costs.
Find the EPDM O-ring suppliers nearby you
On our contact page, you can find all our offices worldwide and select the O-ring suppliers nearby you. For more information about O-rings or other ERIKS products, please fill in the “Ask ERIKS” form on the upper-right corner.