ethylene-propylene diene terpolymer

polymer

Ethylene-propylene diene terpolymer (EPDM) is a synthetic rubber formed from three monomers that creates an elastomer with excellent resistance to weathering, ozone, and temperature extremes. It is widely used in automotive sealing applications (weatherstripping, gaskets, radiator hoses), roofing membranes, and industrial hose assemblies where long-term outdoor durability and chemical resistance are critical. Engineers select EPDM over natural rubber or nitrile when applications demand superior ozone and UV resistance combined with low-temperature flexibility, making it the standard choice for systems exposed to harsh environments over extended service life.

automotive seals and gasketsroofing membranesindustrial hosesweatherstrippingvibration dampeningoutdoor exposure applications

Compliance & Regulations

?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Glass Transition Temperature(Tg)	214.7	K	—

Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Safety & Biocompatibility

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

ethylene-propylene diene terpolymer

Thermal Properties

Regulatory Screening

Environmental

Safety & Biocompatibility