Ethylene Propylene (EPDM)

Abbreviation:

EP, EPR, EPT EPDM

ASTM D-2000 Classification:

AA, BA, CA, DA

Chemical Definition:

Ethylene Propylene Diene

 

Physical & Mechanical Properties

  • Durometer or Hardness 30 - 90 Shore A
  • Tensile Strength 500 - 2500 PSI
  • Elongation % 100% - 700%
  • Abrasion Resistance Good
  • Adhesion to Metal Good to Excellent
  • Adhesion to Rigid Materials Good to Excellent
  • Compression Set Poor to Excellent
  • Flex Cracking Resistance Good
  • Impact Resistance Very Good
  • Resilience/Rebound Fair to Good
  • Tear Resistance Fair to Good
  • Vibration Dampening Fair to Good

Thermal Properties

  • Low Temperature -60° F to -40° F
  • Minimum for Continuous Use (static) -60° F
  • Brittle Point -70° F
  • High Temperature +220° F to +300° F
  • Maximum for Continuous Use (static) +300° F

Environmental Performance

  • Colorability Good to Excellent
  • Flame Resistance Poor
  • Gas Permeability Fair to Good
  • Odor Good
  • Ozone Resistance Good to Excellent
  • Oxidation Resistance Excellent
  • Radiation Resistance Good to Excellent
  • Steam Resistance Excellent
  • Sunlight Resistance Excellent
  • Taste Retention Good to Excellent
  • Weather Resistance Excellent
  • Water Resistance Excellent

Chemical Resistance

  • Acids, Dilute Excellent
  • Acids, Concentrated Excellent
  • Acids, Organic (Dilute) Excellent
  • Acids, Organic (Concentrated) Fair to Good
  • Acids, Inorganic Excellent
  • Alcohols Good to Excellent
  • Aldehydes Good to Excellent
  • Alkalies, Dilute Excellent
  • Alkalies, Concentrated Excellent
  • Amines Fair to Good
  • Animal & Vegetable Oils Good
  • Brake Fluids, Non-Petroleum Based Good to Excellent
  • Diester Oils Poor
  • Esters, Alkyl Phosphate Excellent
  • Esters, Aryl Phosphate Excellent
  • Esters Fair
  • Fuel, Aliphatic Hydrocarbon Poor
  • Fuel, Aromatic Hydrocarbon Poor
  • Fuel, Extended (Oxygenated) Poor
  • Halogenated Solvents Poor
  • Hydrocarbon, Halogenated Poor
  • Ketones Good to Excellent
  • Lacquer Solvents Poor
  • LP Gases & Fuel Oils Poor
  • Mineral Oils Poor
  • Oil Resistance Poor
  • Petroleum Aromatic Poor
  • Petroleum Non-Aromatic Poor
  • Refrigerant Ammonia Good
  • Refrigerant Halofluorocarbons R-12, R-13
  • Refrigerant Halofluorocarbons with Oil Poor
  • Silicone Oil Excellent
  • Solvent Resistance Poor

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