EPDM rubber, a polymer composed of ethylene propylene diene monomer, is the premier weather resistant synthetic elastomer. EPDM rubber has excellent heat, ozone, UV, aging, and weathering resistance. EPDM rubber also exhibits excellent electrical insulation, good compression set and low-temperature properties. EPDM rubber is resistant to a wide range of fluids including water, ethylene glycol (anti-freeze) and offers good resistance to most water-based chemicals and vegetable-based hydraulic fluids. EPDM is also resistant to many mild acids, liquid fertilizers and synthetic brake fluids.
EPDM can be fabricated in a variety of ways, which include custom molded and extruded parts. The long-term lifespan allows for fewer replacement parts, saving money in the long run.
The largest market for EPDMs is the automotive industry. Typical applications include radiator and heater hoses, window and door seals, O-rings and gaskets, accumulator bladders, wire and cable connectors, and weather stripping.
Ethylene Propylene has gained wide seal industry acceptance for its excellent ozone and chemical resistance properties and is compatible with many polar fluids that adversely affect other elastomers. EPDM compounds are typically developed with a sulfur or peroxide cure system. Peroxide-cured compounds are suitable for higher temperature exposure and typically have improved compression set performance.
- Excellent resistance to ozone, sun, steam, water, and oxygen
- Excellent resistance to acids, alkali, and ketones
- Excellent heat resistance and aging
- Low temperature usage: -20°F to -60°F (-29°C to -51°C)
- High temperature usage: Up to 350˚F (UP to 177˚C)
- Tensile Range: 500-2500 P.S.I.
- Elongation: 600% Maximum
- Durometer (Hardness) Range: 30-90 Shore A
- Good electrical insulation properties
- Low electrical conductivity
- Adhesion to metals: Fair to Good
- Solvent resistance: Poor
- Oil resistance: Poor
As a custom rubber manufacturer in the U.S. for over 97 years, ARCO® Silicone is equipped to formulate custom EPDM compounds specifically designed for your application. We can manufacture your product in a wide variety of colors (including PMS color match). Want to learn more? Fill out our Contact Form or Request a Quote today.
Ethylene Propylene Diene Monomer
Can be produced in various durometers, cut to order, and packaged in bulk.
Minimum order = 100 pounds
FDA 26CFR Compliant
ISO 9001: 2015 CERTIFIED
ASTM D-2000 Classification