EPDM Chemical Resistance Chart

EPDM (Ethylene Propylene Diene Monomer) is a versatile synthetic rubber excellent for water, steam, and polar chemicals. It's the go-to choice for outdoor applications and hot water systems.

950+ chemicals tested 20°C & 50°C data Elastomer

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Excellent (A)

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Good (B)

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Limited (C)

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Not Recommended (D)

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Chemical	Concentration	20°C	50°C	CAS

EPDM Properties

Full Name Ethylene Propylene Diene Monomer

Type Synthetic rubber (elastomer)

Max Temperature 150°C (302°F) continuous

Min Temperature -50°C (-58°F)

Hardness Range 40–90 Shore A

UV/Ozone Resistance Excellent

FDA Grades Available

Cost Low-Moderate

Common Applications

Water Systems

Hot/cold water seals, plumbing gaskets, water pumps

Steam & HVAC

Steam hoses, HVAC seals, radiator hoses

Outdoor/Roofing

Roofing membranes, window seals, weatherstripping

⚠️ Not Recommended For

EPDM swells and degrades when exposed to:

Petroleum oils and fuels (gasoline, diesel)
Mineral oils and greases
Aromatic hydrocarbons (benzene, toluene)

Halogenated solvents
Concentrated acids
Turpentine and hydrocarbon solvents

Tip: For oil and fuel applications, use NBR (Nitrile) or Viton® (FKM) instead.

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