EPDM (ethylene propylene diene monomer) is the go-to elastomer when a gasket has to live outdoors or handle water, steam, and weather. Its standout trait is exceptional resistance to ozone, UV, and weathering — the things that crack ordinary rubber over time. We laser-cut custom EPDM gaskets to your exact dimensions with no minimum order and ship within 24 hours. Custom EPDM Gasket Specifications Temperature range −40°F to 250°F (short excursions to 300°F) Durometer (hardness) 60–70 Shore A standard Excellent resistance to Ozone, UV, weathering, water, steam, mild acids & alkalis Poor resistance to Petroleum oils, fuels, and hydrocarbon solvents Thicknesses available 1/16", 1/8", 3/16", 1/4" Additional specifications and specific durometers are available on request — contact us with your requirements. Common EPDM Gasket Applications HVAC flange and access-panel seals Outdoor electrical enclosures and junction boxes Potable water and plumbing gaskets Roofing, solar, and rooftop equipment seals Automotive cooling-system and weatherstrip gaskets Marine and irrigation fittings When to Choose EPDM Choose EPDM over Neoprene when weather and ozone resistance matter more than oil resistance; choose it over Silicone when you want better steam and abrasion performance at a lower cost. If your gasket will contact petroleum oils or fuels, pick Buna-N (Nitrile) instead. EPDM Gasket FAQs Is EPDM safe for drinking water?Yes — EPDM is commonly used in potable-water and plumbing applications because it resists water and steam without leaching. Confirm any specific certification you require when ordering.Can EPDM be used outdoors?EPDM is one of the best elastomers for outdoor use. Its resistance to UV, ozone, and weathering means it stays flexible and sealed for years where standard rubber would crack.Does EPDM resist oil?No. EPDM has poor resistance to petroleum oils, fuels, and hydrocarbon solvents. For oil or fuel contact, order a Buna-N (Nitrile) gasket instead. Enter your dimensions in the quote tool above for an instant price on custom EPDM gaskets from Fastest Gaskets — no minimum order, ships in 24 hours. {"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Is EPDM safe for drinking water?","acceptedAnswer":{"@type":"Answer","text":"Yes — EPDM is commonly used in potable-water and plumbing applications because it resists water and steam without leaching. Confirm any specific certification you require when ordering."}},{"@type":"Question","name":"Can EPDM be used outdoors?","acceptedAnswer":{"@type":"Answer","text":"EPDM is one of the best elastomers for outdoor use. Its resistance to UV, ozone, and weathering means it stays flexible and sealed for years where standard rubber would crack."}},{"@type":"Question","name":"Does EPDM resist oil?","acceptedAnswer":{"@type":"Answer","text":"No. EPDM has poor resistance to petroleum oils, fuels, and hydrocarbon solvents. For oil or fuel contact, order a Buna-N (Nitrile) gasket instead."}}]}
