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EPDMEthylene. Propylene Diene Monomer (EPDM)
EPDM is the abbreviated name for Ethylene Propylene Diene Monomer. In general industry, one may see other abbreviations or trade names such as EPT, Nordel®, ECO, or EPR. All of these are the same material as EPDM.
EPDM ia standard seat material affered in the resilient seated Del Tech butterfly valves . it is the most universal and economical and economical of seat materials.