EPDM sponge extrusion

EPDM Sponge Extrusions

Advanced Seals & Gaskets Ltd (ASG) specialise in supplying high-quality EPDM sponge extrusions for a wide range of industrial applications. Our extrusions are available in many grades and profiles, from simple cords to complex contoured designs, offering superior protection, sealing, and aesthetic finishing for edges and surfaces.

EPDM sponge extrusions are commonly requested by customers due to their exceptional physical, chemical, and environmental resistance properties. All products are made to order using customer samples or drawings, ensuring a perfect fit for each application.

What Are EPDM Sponge Extrusions?

EPDM stands for Ethylene Propylene Diene Monomer, a synthetic, closed-cell material known for its strength, flexibility, and durability. It is ideal for internal and external sealing applications where minimal compression is needed to create an effective seal.

Extrusion is the process of shaping raw EPDM sponge rubber into continuous profiles using high-pressure extruder machines and dies. The resulting EPDM sponge extrusion has a consistent cross-sectional shape along its entire length, tailored to the customer’s design.

Extrusions can be:

  • Solid: such as cords or strips

  • Hollow: with a central cavity running through the length

Common extrusion profiles include D-sections, P-sections, U-channels, door seals, window seals, and cords, many of which can be supplied with self-adhesive backing for easy installation.

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






    Key Characteristics of EPDM Sponge Extrusions

    • Colours: Black and white (medium density)

    • Density: 90 – 140 kg/m³

    • Flammability Tested: FMVSS 302

    • Operating Temperature: -20°C to +85°C

    • Thickness: 1mm – 50mm (without laminations)

    • Environmental Resistance: UV, ozone, weathering

    • Chemical Resistance: Ketones, diluted acids, and alkalis

    Full technical data can be supplied on request or downloaded from our online portal.

    Product Specification Sheet

    Why Use EPDM Sponge Extrusions?

    EPDM sponge extrusions are ideal for applications requiring:

    • Sealing against air, gas, and liquids

    • Cushioning to reduce vibration, noise, and impact

    • Protection of edges, surfaces, and equipment

    Extrusions are highly versatile and perfect when standard seals or gaskets do not fit. Custom EPDM extrusions provide continuous lengths of consistent profile, delivering both a perfect fit and the inherent properties of EPDM sponge.

    Benefits of EPDM Sponge Extrusions

    • Reduces noise, vibration, shock, and abrasion

    • Flexible with excellent compression recovery

    • Cost-effective and readily available

    • Naturally compressible to create airtight and watertight seals

    • Closed-cell structure prevents bacteria and mould build-up

    • Bespoke profiles available to meet specific applications

    Advantages of Using EPDM Sponge Extrusions

    EPDM sponge is a strong, closed-cell synthetic material suitable for both internal and external sealing applications. Its long lifespan makes it ideal for outdoor use, and it remains free from dust and fibre contamination.

    EPDM sponge extrusions can be produced in a wide range of standard and bespoke profiles, with options for self-adhesive backing. The material offers:

    • Air- and watertight sealing

    • Excellent resistance to UV, ozone, weathering, and general abrasion

    • Electrical insulation properties

    • Flammability testing in accordance with FMVSS302 and UL94 HBF

    • Operating temperature range of -20°C to +85°C

    Grades of EPDM Sponge Extrusions Available

    ASG stocks a variety of EPDM sponge grades and densities for customised extrusion solutions:

    • High-Temperature EPDM Foam: Closed-cell, highly flexible, temperature range -50°C to +128°C. Ideal for HVAC, refrigeration, pipelines, automotive, white goods, and building applications.

    • Semi-Open Cell EPDM: Flexible material that seals air and water when compressed ≥80%, combining the benefits of open- and closed-cell foams.

    • Firm Grade EPDM Foam: More resilient with higher tear strength, suitable for demanding applications in automotive, marine, defence, and construction industries.

    Applications of EPDM Sponge Extrusions

    EPDM sponge extrusions are widely used across multiple industries, including:

    • Automotive: Door seals, window trims, vibration dampening

    • Construction & Building: Expansion joints, edge protection, insulation

    • Marine & Defence: Watertight sealing and robust cushioning

    • HVAC & Refrigeration: Airflow control, noise reduction, and sealing

    • Industrial Equipment: Vibration, shock, and impact absorption

    Contact ASG Today

     For bespoke EPDM sponge extrusions, call 01384 252555 or submit an enquiry online. Our team will provide expert advice, samples, and fast delivery to meet your exact requirements.

    Have a Question about EPDM Sponge Extrusion?

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