Material
EPDM
EPDM properties and chemical compatibility.
Polymer
Ethylene propylene diene rubber (EPDM)
Temperature range
−45 °C … +150 °C
Hardness
40–90 Shore A
Overview
EPDM excels with water, steam, glycol brake fluids and many polar chemicals, and has outstanding ozone and weather resistance. The critical rule: it is not compatible with mineral oils, fuels or other petroleum products.
Strengths
- • Excellent hot water and steam resistance
- • Outstanding ozone, weather and UV resistance
- • Compatible with glycol brake fluids
- • Good resistance to many acids and bases
Limitations
- • Not compatible with mineral oils or fuels
- • Not for hydrocarbon-based media
- • Moderate abrasion resistance
- • Limited resistance to concentrated acids
Compatible media
Water & steamGlycol brake fluidMany acids & alkalisOzone & weather exposure
Media to avoid
Mineral oils & greasesFuels & hydrocarbonsPetroleum solvents
Typical applications
Brake & hydraulic (glycol) systemsCooling, water & steam circuitsHVAC & sanitaryOutdoor & weather-exposed seals
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