RGH Converting | Closed Cell EPDM

Closed Cell EPDM

Closed-cell EPDM foam, custom-cut to size for demanding sealing, gasketing and insulation applications. Delivered fast, UK-wide.

Weather & UV Resistant
Wide Temperature Range
Compressible & Flexible
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What is Closed-Cell EPDM Foam?

EPDM (Ethylene Propylene Diene Monomer) foam is a closed-cell synthetic rubber renowned for its durability, flexibility and resistance to weathering.

Its structure makes it ideal for sealing, gasketing and insulation – especially in environments exposed to moisture, UV or ozone. Whether you’re manufacturing automotive components or external enclosures, EPDM delivers long-lasting performance and reliable protection.

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Technical Information

Closed-Cell EPDM Technical Details & Options

  • Typically available from 1mm to 25mm. Custom thicknesses on request.

  • Ranges from 60kg/m³ to 120kg/m³ depending on application requirements.

  • Available with single- or double-sided pressure-sensitive adhesive (PSA) options.

  • Cut to industry-standard tolerances for dimensional accuracy and repeatability.

  • Available in grades compliant with UL94, FMVSS 302, and REACH/RoHS where required.

RGH Converting | Closed Cell EPDM

Benefits

Why Choose Closed-Cell EPDM?

EPDM foam delivers a strong performance in even the harshest of environments. Here are six reasons why engineers and manufacturers choose it for demanding applications:

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  • Weather Resistant

    Performs in extreme outdoor environments without degrading or cracking.

  • UV & Ozone Stable

    Maintains flexibility and performance under prolonged UV exposure.

  • Water-Resistant Seal

    Closed-cell structure offers excellent moisture and splash resistance.

  • Wide Temperature Range

    Reliable in hot or cold conditions (typically -40°C to +100°C).

  • Compressible & Flexible

    Conforms to uneven surfaces and tolerances for secure gasketing.

  • Low Maintenance & Long Lifespan

    Resistant to aging, ensuring product durability over time.

RGH Converting | Closed Cell EPDM

Delivering Excellence: What Our Clients Say

It is rare to deal with a company that is 100% efficient and 100% reliable while remaining courteous and friendly at the same time. RGH Converting is that rare find. We initially approached them with a complex material challenge, and their team acted as a true extension of our own, providing technical clarity and high-standard prototypes at impressive speed.

Their expertise as a 3M Preferred Converter gave us total confidence in the quality of the final product. I have no hesitation in recommending RGH to any manufacturer looking for precision, reliability, and a partnership-led approach.

 

Automotive Client

Get in Touch

Have a question or need support with a materials challenge? Our Specialists are here to help.

Speak to our technical team about your project requirements and discover how our converting expertise can provide the right material solution for your application.

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    RGH Converting | Closed Cell EPDM

    Request a Sample

    Request a product sample to test performance in real-world conditions.

    Our samples are a great way to evaluate suitability before scaling production and we’re here to support you every step of the way.

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    Common Industry Uses

    Where is Closed-Cell EPDM Used?

    Closed-cell EPDM is trusted across industries where long-term durability, reliable sealing, and resistance to environmental factors are essential. Common applications include:

    FAQs

    Frequently Asked Questions About Closed-Cell EPDM Foam

    Got questions about Closed-Cell EPDM foam? We’ve answered the most common queries about its performance, applications, and customisation options to help you choose the right solution for your project.

    • What are the main benefits of EPDM foam?

      EPDM foam offers excellent resistance to weathering, UV, ozone, and temperature extremes, making it ideal for outdoor sealing applications.

    • Is EPDM foam suitable for automotive or HVAC sealing?

      Yes. RGH commonly supply EPDM into automotive door seals, HVAC units, and enclosure gasketing due to its long-term durability and compression-set resistance.

    • How well does EPDM foam resist oils and fuels?

      EPDM provides poor resistance to oils, fuels, and hydrocarbons. For oil exposure, neoprene or NBR-based foams are typically recommended.

    • Does EPDM foam accept PSA adhesives?

      Yes. EPDM bonds very well with high-performance acrylic adhesives and RGH commonly supply with adhesive backing for easy installation.

    • What densities and thicknesses are available?

      EPDM foams come in a several densities and can be supplied in thicknesses from thin gasketing layers to thick sealing strips. Custom die-cutting and lamination are standard for RGH.

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    RGH Converting | Closed Cell EPDM

    Need Expert Guidance on Closed-Cell EPDM?

    From early-stage development to full production, our team can help you select the right grade, format, and finish for your application.

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