Ethylene propylene rubber is a form of non-polar synthetic rubber. EPDM consists of an additional monomer, diene, and can be cured using peroxide- or sulfur-based chemistries. EPM and EPDM seals only differ slightly in performance. Both present outstanding resistance to phosphate ester fluids, along with excellent ozone resistance.
Outstanding resistance to phosphate ester fluids, along with excellent ozone resistance.