EPDM Rubber Gaskets

EPDM Rubber Gaskets:

The Durable Synthetic Rubber for Automotive and Construction Seals

EPDM is an extremely durable synthetic rubber (Ethylene Propylene Diene Monomer). Its two primary ingredients, ethylene and propylene, are derived from oil and natural gas. EPDM is used most commonly used in the automotive and construction industries for various seals due to its excellent resistance to environmental factors such as Ozone, UV and general weathering.

The Main Properties Of EPDM Rubber

    • ASTM D-2000 Classification: CA
    • Chemical Definition: Ethylene Propylene Diene Monomer
    • Temperature Range
      • Low Temperature Usage:-20° to -60° F | -29⁰C to -51⁰C
      • High Temperature Usage: Up to 350° F |Up to 177⁰C
    • Tensile Strength
      • Tensile Range: 500-2500 P.S.I.
      • Elongation: 600% Maximum
    • Durometer (Hardness)
      • Range: 30-90 Shore A
      • Resilience/ Rebound: Good
      • Abrasion Resistance: Good
      • Tear Resistance: Fair
      • Compression Set: Good

Additional Properties

      • Aging Weather – Sunlight: Excellent
      • Adhesion to Metals: Fair to Good
      • Solvent Resistance: Poor
      • Oil Resistance: Poor
EPDMRubberGasket 1

Swift Custom Gasket Manufacturing in EPDM

Alpha Die Cutting manufacturers custom gaskets from a wide variety of grades, thicknesses and hardness of EPDM rubber.

We have worked with our material suppliers and can now provide a 6 business day delivery for the manufacture of custom gaskets made from some EPDM material specs.

Weather resistant – sunlight, ozone, water. Used for outdoors.

  • Black color
  • Temp range -40 to 225 degrees F
  • Thicknesses. 1/32, 1/16, 3/32, 1/8, 3/16, ¼, 3/8, ½ inches
  • 60 duro hardness
  • With acrylic PSA or plain backing

High strength weather resistant – better shock absorbing and a longer life.

  • Black color
  • Temp range -55 to 300 degrees F
  • Thickness 1/32, 1/16, 3/32, 1/8, 3/16, ¼ inches
  • Tensile strength 1200, 1500 and 1800 psi
  • 40, 50 60 duro hardness

Criss-cross texture – provides extra gripping on both sides

  • Black color
  • Temp range -40 to 240 degrees F
  • 40, 60, 80 duro hardness
  • Thickness 1/16, 1/8 ¼ inches

Food grade – steam and weather resistant

  • Cream color
  • FDA listed
  • Temp range -40 to 220 degrees F
  • Tensile strength 800 psi
  • 40 duro hardness
  • Thickness 1/32, 1/16, 3/32, 1/8, 3/16, ¼ inches

Advantages and Disadvantages of EPDM Rubber


EPDM resists sunlight, ozone, oxygen, aging, acids, alkalis, water and severe weather conditions. This odor-free elastomer also provides excellent color stability and high heat resistance. Typically, service temperatures range from -70° C to 250° C. All EPDM rubber isn’t the same, so differences in ethylene content and the dienes that are used can affect physical properties.

EPDM generally provides good tensile strength and elasticity. Tensile strength, the resistance to breaking under tension, is measured in pounds per square inch (PSI). With EPDM, typical values are in the 1000 PSI range. Elasticity, a measure of a material’s ability to resume its normal shape after being stretched or compressed, is expressed as a percentage. With EPDM, this percentage is typically in the 300% range.


The main disadvantage of EPDM is its unsatisfactory resistance to certain categories of chemicals. In addition to gasoline, diesel fuel, and motor oil, EPDM is not recommended for use with synthetic diester oils, lubricants found in some types of industrial machinery.

Custom EPDM seals are sometimes used instead of silicones, nitriles, or thermoplastic elastomers (TPEs). Silicones can withstand lower and higher temperatures, but they lack EPDM’s resistance to abrasion, cutting, and tearing. EPDM also provides better tensile strength. For resistance to fuels, greases, and oils, nitrile is a better choice. TPE costs more than EPDM rubber but is recyclable.

Ready to Transform Your Vision into Reality?

Whether you're seeking a specific color or material type, Alpha Die Cutting is here to cater to your needs. Contact us today to explore our manufacturing solutions and start your customization journey. Your unique project deserves our attention.