EPDM Rubber Parts (EPR)

Ethylene Propylene (EPR, also called EPDM) is a polymer with outstanding properties. It has exceptionally good weather aging and ozone resistance; excellent water and chemical resistance; excellent resistance to gas permeability, and excellent resistance to aging due to exposure to steam; and heat, resistance excellent up to 350°F. Ethylene Propylene is a polymer where oil and solvent resistance is poor, however, it is fairly good in ketones and alcohols. It is not recommended for food applications or exposure to aromatic hydrocarbons.


At Minor Rubber, we offer the following products in EPR:

EPDM Characteristics

  • Common Names: EPDM, EPR, EPT
  • ASTM D2000 Classification: CA
  • Military (MIL-STD 417): RS
  • Chemical Definition: Ethylene Propylene

Physical Characteristics

  • Durometer Range: 30 – 90
  • Tensile Range (P.S.I.): 500 – 2500
  • Elongation (Max. %): 600
  • Compression Set: Good
  • Resilience – Rebound: Good
  • Abrasion Resistance: Good
  • Tear Resistance: Fair
  • Solvent Resistance: Poor
  • Oil Resistance: Poor
  • Low Temperature Usage: -20° to -60°
  • High Temperature Usage: up to 350°
  • Aging Weather – Sunlight: Excellent
  • Adhesion to Metals: Fair to Good

For more information about our inventory of EPDM parts, please contact Minor Rubber today!