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Ethylene Propylene Rubber (EPR / EPDM)

  • Ethylene Propylene Rubber
    (EPR / EPDM)

    Ethylene Propylene Rubber is also commonly referred to as EPR or EPDM. It is widely used in a large number of industrial sealing applications.

    EPDM / EPR compounds provide excellent resistance to ozone, weathering, hot and cold water and also steam. EPDM / EPR also shows resistance to Skydrol™ and other phosphate-ester hydraulic fluids commonly used in aircraft hydraulics, while also providing resistance to certain automotive brake fluids. It is also a useful sealing material for use in alcohols, glycols, silicone oils, weak acids, alkali and Methyl Ethyl Ketone (MEK).



    Caution utilising Ethylene Propylene Rubber 

    Caution must be taken when utilising EPDM / EPR compounds as they are not considered compatible with hydrocarbon fuels or synthetic and mineral lubricants.

    When using EPDM / EPR materials in sealing applications they should never be lubricated or come into contact with petroleum based lubricants or greases as the material will suffer from excessive volume swell which could seriously affect the sealing ability of the product in use. Any test-rig used for hydraulic cylinder pressure testing must also follow this rule and only use fluids compatible with EPDM / EPR.

    Data sheet
    Temperature
    Hardness
    Description
    EP-B85
    General Purpose 85a EPDM    		 Min: -50°C
    Max: +130°C
    85 Shore A

    A general-purpose peroxide cured Ethylene-Propylene-Rubber (EP or EPDM), useful for applications involving hot water and/or steam and some commonly used fire-resistant fluids.
    EPFQ-W85
    White FDA Compliant EPDM    		 Min: -50°C
    Max: +100°C

    85 Shore A

    A white Sulphur cured Ethylene-Propylene-Rubber (EPDM) which has been migration tested in accordance with FDA 21 CFR 177.2600 and meets the requirements of EC1935/2004 regulations.
    EPKTW-B85
    Black KTW W270 Drinking Water Compliant EPDM    		 Min: -45°C
    Max: +120°C

    85 Shore A

    		 A black Peroxide cured Ethylene-Propylene-Rubber (EPDM) which has been developed and approved for use in drinking water in-line with German KTW-W270 standards.
    Approvals: KTW-W270 Compliant
    EP-B76
    Soft Grade Peroxide Cured EPDM    		 Min: -40°C
    Max: +135°C

    76 Shore A

    A soft peroxide cured EPDM with excellent compression set values and resistance to both hot and cold water as well as steam, diluted acids, bases and DOT3, DOT4 and DOT5.1 brake fluids making it an ideal choice for use in braking cylinders / systems.


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