Epdm extrusions

EPDM Extrusions

EPDM Extrusions

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, including extruded parts and pieces. The long-term lifespan allows for fewer replacement parts, saving money in the long run.


  • Excellent resistance to ozone, UV, 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

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.

As a custom rubber manufacturer in the U.S. since 1923, Alliance Rubber Company is equipped to formulate custom EPDM compounds specifically designed for your application. Serving markets specializing in the food processing, electronics, aerospace, healthcare, construction, transportation, and defense industries, our experienced staff is knowledgeable about application requirements, part specifications, and quality standards. Custom rubber extrusions are available in continuous lengths or cut to length.*

Custom EPDM

Item Description: EPDM Extrusions, EPDM Molded Products
Material: Ethylene Propylene Diene Monomer
Production Capabilities: Can be produced in various durometers*, cut to order, and packaged in bulk.
Production Volumes: Minimum order = 100 pounds
Industry Standards:
  • FDA 26CFR Compliant
  • ISO 9001: 2015 CERTIFIED
  • MIL-STD-105e
  • ASTM D-2000 Classification


*Custom EPDM rubber products are available in a range of durometers (hardness) up to 50 durometer.