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Excellent resistance to weathering and ozone, water and steam, with good performance in castor and some phosphate ester based fluids. It's low and high temperature capability is good, having excellent resistance to set with good resilience. Also high temperature braking systems employing castor based fluids for mouldings subjected to weathering and ozone and for seals in chemical plant due to its good chemical resistance.

EPDM is particularly useful when sealing phosphate-ester hydraulic fluids and in brake systems that use fluids having a glycol or silicone base.

This results in a highly fluorinated elastomeric compound with exceptional temperature resistance, compatibility with a wide range of aggressive chemical combinations and outstanding resistance to permanent deformation.

Available with the following Approvals/Certifications if required. Please call for further information.


Temperature Range

  • Up to 150°C (Intermittant)
  • Down to -45°C

Recommended temperature range -30°C to +125°C

Chemical resistance

  • Hot water and steam up to 149°C with special compounds up to 260°C
  • Glycol based brake fluids (Dot 3 & 4) and silicone-based brake fluids (Dot 5) up to 149°C
  • Many organic and inorganic acids
  • Cleaning agents, sodium and potassium alkalis
  • Phosphate-ester based hydraulic fluids (HFD-R)
  • Silicone oil and grease
  • Many polar solvents (alcohols, ketones, esters)
  • Ozone, aging and weather resistant

Not compatible with:
  • Mineral oil products (oils, greases and fuels)

British Standard O-rings, Cross Section 5.33mm

British Standard O-rings, Cross Section 3.53mm

British Standard O-rings, Cross Section 1.02mm to 1.78mm

British Standard O-rings, Cross Section 2.62mm