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Our Clients
Premium EPDM Closed Cell Sponge Rubber
Engineered for extreme environments where conventional materials fail
Technical Specification
Uncompromising Performance
Our commercial-grade EPDM closed cell sponge rubber sheet represents the pinnacle of synthetic rubber engineering. Manufactured to exacting standards, this material delivers exceptional resistance to water, salt water, weathering, UV radiation, and ozone degradation—making it the material of choice for marine, automotive, and industrial sealing applications.
The closed cell structure provides superior compression set resistance and water impermeability, whilst maintaining excellent flexibility across a wide temperature spectrum. Unlike open cell alternatives, moisture cannot penetrate the cell walls, ensuring consistent performance in wet environments.
Key Performance Characteristics
- Water & Salt Water Resistant — Impervious to fresh and marine environments
- Weatherproof Construction — Withstands prolonged outdoor exposure without degradation
- UV & Ozone Resistant — Maintains integrity under direct sunlight and atmospheric ozone
- Closed Cell Technology — Zero water absorption, superior compression recovery
- Temperature Stable — Performs reliably from -40°C to +120°C
- Excellent Compression Set — Retains sealing force over extended service life
Applications & Industries
Marine & Offshore
Hatch seals, porthole gaskets, deck fittings, hull penetrations
Automotive & Transport
Door seals, window gaskets, vibration damping, weatherstripping
HVAC & Building Services
Duct sealing, thermal insulation, acoustic damping, expansion joints
Industrial Manufacturing
Equipment gaskets, protective padding, vibration isolation, sealing strips
Why Specify EPDM Closed Cell?
EPDM (Ethylene Propylene Diene Monomer) offers superior weather resistance compared to natural rubber, neoprene, or nitrile alternatives. The closed cell structure prevents water ingress, making it ideal for outdoor, marine, and wet environment applications where open cell foams would fail. Its exceptional ozone and UV resistance ensures decades of reliable service without hardening, cracking, or loss of elasticity.
Material Properties
| Property | Value |
|---|---|
| Hardness (Shore A) | 15-25 |
| Tensile Strength | ≥ 1.5 MPa |
| Elongation at Break | ≥ 150% |
| Compression Set (22h @ 70°C) | ≤ 25% |
| Water Absorption | < 5% by volume |
| Flame Rating | Self-extinguishing |
Ordering Information
Available Thicknesses: 3mm, 5mm, 6mm, 10mm, 12mm, 15mm, 20mm, 25mm
Sheet Width: 1.4 metres (standard)
Pricing: Per linear metre
Colour: Black (standard)
UK stock held for rapid dispatch. Custom thicknesses and widths available on request for project quantities.
About Us
All orders ship quickly for free via
& 
We are a UK company with over 60 years of experience in the industry.
Your orders support a family owned and operated business.
-
FREE Shipping anywhere in the UK
-
Satisfaction Guaranteed.
-
Secure Payments
-
Need help? Call Us 01282 277786 or email
sales@rubberco.co.uk
- In stock
Our Clients
Premium EPDM Closed Cell Sponge Rubber
Engineered for extreme environments where conventional materials fail
Technical Specification
Uncompromising Performance
Our commercial-grade EPDM closed cell sponge rubber sheet represents the pinnacle of synthetic rubber engineering. Manufactured to exacting standards, this material delivers exceptional resistance to water, salt water, weathering, UV radiation, and ozone degradation—making it the material of choice for marine, automotive, and industrial sealing applications.
The closed cell structure provides superior compression set resistance and water impermeability, whilst maintaining excellent flexibility across a wide temperature spectrum. Unlike open cell alternatives, moisture cannot penetrate the cell walls, ensuring consistent performance in wet environments.
Key Performance Characteristics
- Water & Salt Water Resistant — Impervious to fresh and marine environments
- Weatherproof Construction — Withstands prolonged outdoor exposure without degradation
- UV & Ozone Resistant — Maintains integrity under direct sunlight and atmospheric ozone
- Closed Cell Technology — Zero water absorption, superior compression recovery
- Temperature Stable — Performs reliably from -40°C to +120°C
- Excellent Compression Set — Retains sealing force over extended service life
Applications & Industries
Marine & Offshore
Hatch seals, porthole gaskets, deck fittings, hull penetrations
Automotive & Transport
Door seals, window gaskets, vibration damping, weatherstripping
HVAC & Building Services
Duct sealing, thermal insulation, acoustic damping, expansion joints
Industrial Manufacturing
Equipment gaskets, protective padding, vibration isolation, sealing strips
Why Specify EPDM Closed Cell?
EPDM (Ethylene Propylene Diene Monomer) offers superior weather resistance compared to natural rubber, neoprene, or nitrile alternatives. The closed cell structure prevents water ingress, making it ideal for outdoor, marine, and wet environment applications where open cell foams would fail. Its exceptional ozone and UV resistance ensures decades of reliable service without hardening, cracking, or loss of elasticity.
Material Properties
| Property | Value |
|---|---|
| Hardness (Shore A) | 15-25 |
| Tensile Strength | ≥ 1.5 MPa |
| Elongation at Break | ≥ 150% |
| Compression Set (22h @ 70°C) | ≤ 25% |
| Water Absorption | < 5% by volume |
| Flame Rating | Self-extinguishing |
Ordering Information
Available Thicknesses: 3mm, 5mm, 6mm, 10mm, 12mm, 15mm, 20mm, 25mm
Sheet Width: 1.4 metres (standard)
Pricing: Per linear metre
Colour: Black (standard)
UK stock held for rapid dispatch. Custom thicknesses and widths available on request for project quantities.
About Us
All orders ship quickly for free via
& 
We are a UK company with over 60 years of experience in the industry.
Your orders support a family owned and operated business.
Commercial EPDM Closed Cell Sponge Rubber Sheet – Marine Grade, Weatherproof, UV & Ozone Resistant
X Commercial EPDM Closed Cell Sponge Rubber Sheet – Marine Grade, Weatherproof, UV & Ozone Resistant Added To Cart
- Free UK Delivery
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