Description
Weather, Water & High Temperature Resistant Closed Cell Sealing Sponge
EPDM Sponge Sheet is a premium-grade closed cell EPDM rubber sponge, designed for sealing, insulation, and outdoor applications where weather, water, and temperature resistance are critical.
With its airtight and watertight closed cell structure, EPDM sponge provides long-term sealing performance in harsh environments including UV exposure, marine conditions, and elevated temperatures.
Designed for Outdoor and Marine Sealing Applications
SEC Business Group supplies high-performance sponge rubber materials for applications requiring durability, environmental resistance, and reliable sealing performance.
EPDM Sponge Sheet is ideal for long-term use in exposed environments where water resistance, weathering resistance, and minimal compression loss are essential.
Features & Benefits
- Premium closed cell EPDM sponge rubber.
- Creates airtight and watertight seals.
- Excellent resistance to UV, ozone, and weathering.
- Suitable for long-term outdoor exposure.
- Outstanding water resistance for fresh and saltwater environments.
- Excellent resistance to acids and alkalis.
- Performs in high-temperature environments.
- Low compression set for long-term sealing performance.
- Good mechanical strength and resilience.
- Provides thermal and acoustic insulation.
- Suitable for marine and industrial environments.
- Available in sheets, strips, pads, and custom-cut components.
- Supplied by SEC Business Group.
Applications
- Gaskets and sealing systems
- Compressible strip seals
- Insulation barriers
- Expansion joints
- Marine sealing applications
- Outdoor weatherproof sealing
- HVAC sealing systems
- Sound and vibration dampening
- Equipment enclosures
- General industrial sealing applications
Performance Advantages
- Designed for harsh outdoor and marine environments.
- Maintains performance under UV, water, and temperature exposure.
- Excellent for long-term sealing with minimal compression loss.
- Superior resistance to weathering compared to other sponge materials.
Technical Information
| Property | Value | Standard |
|---|---|---|
| Polymer | EPDM | |
| Colour | Black | |
| Density | 125 kg/m³ | KSM ISO 7214:2006 |
| Hardness | 45° ± 5° Shore 00 | KSM 6660:2006 |
| Tensile Strength | 400 kPa | JIS K6767:1998 |
| Elongation @ Break | 200% | JIS K6767:1998 |
| Temperature Range | -30°C to +100°C | |
| Tear Strength | 2.9 kN/m | ASTM D624 |
| Compression Set (24 hrs @ 72°C) | 8% (max) | KSM ISO 1856:2002 |
| Compression Deflection @ 25% | 40 ± 10 kPa | ASTM D1056 |
Available Sizes
EPDM Sponge Sheet is available in standard sheet sizes:
| Description | Weight (Per Sheet) |
|---|---|
| 3mm × 2000mm × 1000mm | 0.75 kgs |
| 6mm × 2000mm × 1000mm | 1.5 kgs |
| 10mm × 2000mm × 1000mm | 2.5 kgs |
| 12mm × 2000mm × 1000mm | 3 kgs |
Additional thicknesses from 3mm to 50mm are available on request.
Lead times may apply.
Custom Options
EPDM Sponge Sheet can be supplied as:
- Precision-cut gaskets
- Marine and outdoor sealing strips
- Insulation pads
- Expansion joint fillers
- Custom fabricated sealing components
Supply
This product is supplied by SEC Business Group.
For outdoor sealing, marine applications, or custom fabrication, contact SEC Business Group.

