Sulphur Free EPDM Sponge Rubber

EPDM is one of Advanced Seals & Gaskets most popular materials, available in both solid and sponge variants in multiple grades, hardnesses and densities. One such grade of EPDM we can offer is Sulphur Free EPDM Sponge or Peroxide Cured EPDM, which is manufactured and stocked in block form ready for conversion. Our in-house manufacturing facilities incorporate a number of splitters, bandsaws, log cutter, slitters, presses and oscillating knives, allowing us to turn blocks of ‘buns’ of material in sheets, rolls or into finished items such as pads, washers, gaskets or strips. On-site laminating services and gives customers the choice to take their parts in plain finish, or coated with one of our many self-adhesives or foils.

Sulphur Free Epdm Sponge Rubber

Product Enquiry

For information on Sulphur Free EPDM Sponge Rubber please complete the following quick enquiry or call us on +44(0)1384 252555.






    Product Specification & Key Characteristics

    • Colour: black
    • Density: 120+/- 15 kg/m3
    • Sulphur free
    • Better resistance to chemicals and oils
    • Temperature Range: -30 °C ± 90 °C
    • Flammability: FMVSS 302 PASS
    • Resistanced: Ozone, UV resistance, chemicals
    • Impermeable to air and water

    Help and guidance

    If you would like to speak to a representative to discuss your specific application or requirements please call our sales office direct on 01384 469100, alternatively you can send an E-mail. Simply click on the link and forward us your details along with your question and we will contact you immediately.

    Samples - Technical Sulphur Free EPDM Sponge Rubber

    Samples can be submitted for testing upon request.

    Call now for sample requests or further help.

    What is Sulphur Free EPDM Sponge Rubber?

    Standard EPDM or Ethylene Propylene Diene Monomer grades are manufactured using sulphur, however for some delicate applications, a sulphur free or peroxide cured material is required, as sulphur-cured sponges can corrode materials, such as copper, silver, and other metal components therefore inevitably causing electrical devices to fail. Sulphur Free EPDM has better chemical and temperature resistance and due to its sulphur free curing process, is safe to use in applications including lighting and electronics.

    Why use Sulphur Free EPDM Sponge?

    Sulphur Free EPDM is a closed cell material, offering thermal insulation, shock and vibration absorption, good UV and Ozone resistance and excellent sealing properties against dust, air and moisture.

    Sulphur Free EPDM offers a better chemical and temperature resistance compared to standard EPDM and is safe for use within lighting, electronics and automotive applications.

    The Benefits of using Sulphur Free EPDM sponge

    • Noise, vibration, shock and reduction 
    • Naturally compressible to create the perfect air or moisture seal
    • Closed cell structure   prevents bacteria and mould build up
    • Excellent properties making it popular for use in a range of industries and applications
    • Easy to convert into a range of products including pads, strips and gaskets, and will hold most adhesives well
    • Cost savings on equipment and appliance failure

    Grades of EPDM sponge rolls available

    ASG stock a variety of other grades and densities of EPDM sponge which can all be used to manufacture components each suited to individual applications. These include:

    EPDM sponge Medium density is air and water tight, ages well without becoming brittle, offers good UV resistance and is able to withstand a wide scale of temperatures ranging from -20°C up to a high of 85°C. It’s excellent electrical insulation material, as well as having good resistance to ketones, ordinary diluted acids and alkalis, Ozone, UV and weathering as well as its general resistance to abrasion. EPDM foam is also flammability tested to meet FMVSS302 and UL94 HBF standards

    High-Temperature EPDM Foam is closed cell and highly flexible even at low temperatures, with an amazing temperature range of -50°c to +128°c. High-Temperature EPDM foam has many excellent mechanical characteristics including thermal and insulation properties, making this material ideal for many industries and applications including HVAC, Refrigeration, Pipeline, Automotive, White goods and Building & construction, etc.

    Semi-Open cell EPDM combines the flexibility of an open cell material with the excellent sealing capabilities of closed-cell types once compressed. Semi-open cell EPDM pads will allow for the ingress of air, dust, moisture until compressed by 80% of their thickness, following this the product becomes water and airtight and behaves as a closed-cell product.

    Firm Grade EPDM Foam is a more resilient material that will not compress as much as the standard grades under load, also this material benefits from increased tear strength and suits some of the more demanding applications such as Automotive, White Goods, Marine, Defence, Building and Construction, etc...

    For further information, you can view our online spec sheets or speak to a member of our sales team.

    Advantages of using Sulphur Free EPDM

    Using EPDM offers a number of advantages with certain grades adapted to meet particular applications.

    Sulphur Free EPDM is still a closed cell material, offering thermal insulation, shock and vibration absorption, good UV and Ozone resistance and excellent sealing properties against dust, air and moisture, but with an improved chemical and temperature resistance compared to standard EPDM.

    Materials cured or vulcanised using sulphur can react with metals such as copper or silver causing corrosion which leads to equipment failure.

    Sulphur free or peroxide cured EPDM is safe for use within lighting, electronics and automotive applications as it will not react with metals it comes into contact with.

    As Sulphur Free EPDM is manufactured in blocks, customers are able to order bespoke parts as the materials can be split or fabricated to order.

    Got A Question About Sulphur Free EPDM Sponge Rubber?

    Please contact us using the form below or by calling us on +44(0)1384 252555.