EPDM rubber parts
EPDM is a synthetic rubber made from ethylene, propylene and a small amount of a diene, which lets it be vulcanized with sulfur. It is the usual choice for parts that live outdoors or in water. It holds up to sunlight, ozone, rain, hot water and steam.
EPDM is not a good choice where the part touches petroleum oil, grease or fuel. It swells and softens in them. For oil service, look at nitrile or FKM.
At a glance
| Property | EPDM |
|---|---|
| Also called | Ethylene propylene diene monomer, EP rubber |
| Known for | Weather, ozone and water resistance |
| Typical service temperature | -40 °F to +275 °F (-40 °C to +135 °C) |
| Common ASTM D2000 type and class | AA, BA, CA, DA |
Typical values for general-purpose grades. The compound, the hardness and the service conditions decide what a part can take, so we confirm the compound with your quote. For what the type and class letters mean, see ASTM D2000 callouts.
Resistance profile
Generally good with
- Sunlight, ozone and weathering
- Water, hot water and steam
- Many dilute acids and alkalis
- Glycol-based coolants and brake fluids
Usually a poor choice for
- Petroleum oils and greases
- Gasoline, diesel and other fuels
- Hydrocarbon solvents
Where EPDM is used
- Weather stripping and door and window seals
- Outdoor gaskets and enclosure seals
- Water, steam and coolant seals
- Bumpers and pads on outdoor equipment
How we make EPDM parts
We work in EPDM with these processes, all under one roof in Canonsburg, Pennsylvania:
Catalog parts you can request in EPDM
Every catalog part is quoted in the material and durometer you name when you add it to your quote.
Quote a part in EPDM
Send us a drawing, a sample part or a rough sketch. We will review it, recommend the right material and process, and give you a firm ship date with your quote.