Silicone Foam Rubber Sealing
High-performance silicone foam for safe and durable sealing.
Delivers flame resistance, thermal stability, and long-lasting compression recovery in EV battery modules and industrial components.
Reliable Silicone Foam for EV Battery Sealing and Industrial Applications
BR580 is a medium-stress silicone foam material designed for demanding sealing applications where safety, durability, and thermal stability are critical. It is widely used in the edge sealing frames of new energy vehicle (NEV) battery pack modules, providing flame resistance, insulation, and long-term compression recovery. Compared with conventional carbon foamed materials, BR580 offers superior performance under extreme temperatures ranging from -55 °C to 200 °C, along with excellent flame retardancy (UL94 V-0).
Thanks to its outstanding resistance to deformation, weathering, and aging, BR580 is suitable for waterproof sealing, fire prevention, shock absorption, cushioning, and insulation protection across various industries.
NAGASE supplies BR580 silicone foam globally with full technical support, logistics expertise, and application-tailored die-cutting options to meet customer-specific requirements.
Applications
BR580 silicone foam is mainly applied in sealing and insulation for EV battery systems and industrial components.
- Edge sealing of EV battery pack modules
- High-temperature and fire-resistant enclosures
- Waterproof and contaminant-preventing seals
- Shock absorption and cushioning elements
- Industrial gaskets and insulation protection
Features
BR580 provides superior thermal stability, flame resistance, and durability for advanced sealing applications.
- Excellent flame retardancy – UL94 V-0 rated fire protection
- Wide temperature range – Continuous use from -55 °C to 200 °C
- Compression set resistance – Maintains sealing performance over time
- Weather and aging resistant – Long-term reliability in harsh environments
- Lightweight and low density – Easy processing and die-cutting capability
BR580 silicone foam material is widely applied in the edge sealing frames of battery pack modules for new energy vehicles. The images illustrate real-world applications of BR580 in battery modules of two designs: A. and B.
| No. | Test items | Unit | Test standard | Technical indicators |
|---|---|---|---|---|
| 1 | Density | g.cm-3 | ASTM D 1056 | 0.37±0.04 |
| 2 | Compression stress, 25% | kPa | ASTM D 1056 | 75 ± 20 |
| 3 | Permanent compression deformation Rate | % | ASTM D 1056 @100℃ | ≤ 5.0 |
| 4 | Tensile strength | MPa | ASTM D412-16 | ≥ 0.3 |
| 5 | Elongation | % | ASTM D412-16 | ≥ 80 |
| 6 | Water absorption rate | % | ASTM D 570 | ≤ 5.0 |
| 7 | Environmental protection test | / | RoHS, REACH, ELV | Pass |
| 8 | Flammability rating | / | UL94-2013 | V0 |
| 9 | Low temperature bending | / | ASTM D 1056 | -55℃ Pass |
| 10 | Dielectric strength | kV/mm | ASTM D149-09 | ≥ 2.5 |
| 11 | Volume resistivity | Ω.cm | ASTM D257-14 | ≥ 1.0×1014 |
| 12 | Thermal conductivity | W/(m·K) | ASTM C518-17 | 0.08±0.01 |
Advantage
- Cost advantage compared to aluminium or steel trim
- Production efficiency
Frequently Asked Questions about Silicon Foam Rubber Sealing
What is BR580 silicone foam mainly used for?
BR580 is primarily used in the edge sealing frames of EV battery pack modules, where flame resistance, insulation, and long-term sealing reliability are required.
How does BR580 compare to conventional foamed materials?
Compared with carbon-based foamed materials, BR580 provides superior high/low temperature resistance (-55 °C to 200 °C), excellent flame retardancy (V-0), and longer service life due to outstanding weather and aging resistance.
Can BR580 be used in applications beyond EV batteries?
Yes, BR580 is versatile and suitable for waterproof sealing, shock absorption, cushioning, insulation protection, and fire prevention in a wide range of industrial applications.
What makes BR580 suitable for safety-critical applications?
Its high flame retardancy, low compression set, and stable thermal performance make it ideal for applications where fire safety and long-term sealing integrity are essential.
Does NAGASE provide customization options for BR580?
Yes, NAGASE supports tailored die-cutting and supplies BR580 globally with full technical and logistics support.
