// Material · EPDM

EPDM rubber.

EPDM is the outdoor workhorse — outstanding resistance to ozone, UV, weather, steam and hot water. We mould and extrude it into weather seals, profiles, gaskets and grommets for electrical, solar and HVAC applications.

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Key properties

Typical ranges
Temperature range−50°C to +150°C
Hardness40–90 Shore A
Ozone / UV / weatherExcellent
Steam / hot waterExcellent
Oils / fuelsPoor — use NBR / FKM

Indicative ranges; the exact grade and hardness are matched to your application.

// Why EPDM

Built for the outdoors.

Weather & ozone

Excellent ageing under sun, ozone and rain — it stays flexible for years.

Steam & hot water

Handles steam and hot-water sealing where many rubbers fail.

Electrical insulation

Good dielectric properties for outdoor electrical sealing.

Cost-effective

Strong all-round outdoor performance at sensible cost.

// Forms we make

Extruded and moulded.

Extruded

Weather profiles, channels, cords and sponge.

Moulded

Gaskets, seals and grommets to drawing.

// Best for

Where it fits.

Renewable & solar

Junction-box and enclosure seals built for the sun.

Electrical & switchgear

Outdoor enclosure gaskets and cable grommets.

HVAC

Steam, condensate and weather seals.

Automotive

Coolant, weather and body seals.

// Honest limits

Where we'd point you elsewhere.

Oils & fuels

EPDM swells in mineral oils and fuels — for oil contact we recommend NBR or FKM.

// FAQ

Common questions.

Is EPDM good for outdoor use?

Yes — EPDM is one of the best rubbers for ozone, UV and weather resistance, so it ages very slowly outdoors.

Can EPDM handle steam and hot water?

Yes — EPDM resists steam and hot water well, which is why it suits HVAC and heating applications.

Is EPDM resistant to oil?

No — EPDM has poor oil and fuel resistance. For oil contact we recommend NBR or FKM.

Need an EPDM part?

Send a drawing, sample or spec — we'll recommend the material and come back to you.

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Explore our materials — Silicone, EPDM, FKM, NBR, Neoprene and SBR →