EPDM - Ethylene Propylene Diene Monomer Rubber

Clwyd referenceEPDM
ASTM classificationEPDM
Typical applications
  • Automotive weather strip
  • Building weather strip
  • General extruded profiles
  • Heating/cooling hose
  • Diaphragms
  • Electrical cable insulation
Advantages
  • Provides excellent resistance to ozone and weathering
  • Chemically inert – good resistance to chemicals
  • Particularly suited to extrusion processes, especially continuous vulcanisation
  • Good insulation properties
Disadvantages
  • Poor tack and adhesion – can be difficult to bond
  • Not oil resistant
Available hardness range (Shore A)25 - 95
Upper continuous service temp.150°C
Min. temp. for sealing applications-55°C
Minimum non-brittle  temp. -70°C
Tensile strength (up to)23 MPa
Elongation at break (up to)450%
Price BracketVery low
ASTM 1 OilNone
ASTM 2 OilNone
ASTM 3 OilNone
KeroseneNone
Liquid BNone
Liquid 101None
Phosphate esterGood
KetoneExcellent
TolueneNone
Iso-octaneNone
MethanolExcellent
Acid (weak)Good
Acid (strong)Average
Base (weak)Excellent
Base (strong)Good
Hydrogen sulphideExcellent
SteamExcellent
OzoneExcellent
RadiationExcellent
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