Flame Retardant Silicone Sponge EN 45545-2
Key Features
- Designed for the rail industry
- Flame Retardant
- Independently tested to EN 45545-2 and UL 94 V-0 standards
- Low smoke and toxicity properties
- Self-extinguishing
- Good recovery properties
- Sealing rating up to IP67
Product Description
Our flame-retardant silicone sponge is engineered specifically for the rail industry, where passenger and staff safety are critical. This high-performance material delivers exceptional flame resistance along with low smoke and low toxicity characteristics, ensuring reliable protection in demanding rail and mass-transit environments. Independently tested to EN 45545-2 and UL 94 V-0, it meets the strict fire-safety standards required across modern rolling stock.
Designed as an advanced sealing solution, our silicone sponge offers excellent resilience and long-term recovery thanks to its stable chemical structure and fine, closed-cell composition. With a sealing rating up to IP67, it provides a secure barrier against dust and water ingress. Its low closure force allows for lighter and thinner substrates, supporting weight-sensitive or space-restricted applications commonly found in rail vehicle design.
Produced using specialised blowing-agent technology, the material forms a smooth outer skin encapsulating a high-quality silicone sponge core. It can be extruded into custom profiles or manufactured in sheet form, enabling the creation of continuous seals, gaskets, pads, strips, and complex geometries tailored to your specifications. Whether used internally or externally, its wide operating temperature range and minimal water absorption ensure consistent performance year-round.
Our flame-retardant silicone sponge offers a versatile, safety-focused sealing solution trusted across the global rail sector.
Specifications
| Application: | High temperature and flame retardant applications |
| Product: | Flame Retardant Silicone Sponge Sheet |
| Density: | 220 - 550kg/m³ |
| Material: | Silicone sponge |
| Colour: | Grey |
Potential Applications
- Rail and mass transit applications
- Aerospace and automotive
- Electronics and industrial
- High temperature seals
- Panel seals and gaskets
- Insulation
Technical Data
| Properties | Test Method | P16-FR | P24-FR |
|---|---|---|---|
| Density | ISO 845 | 220 kg/m³ | 550 kg/m³ |
| Hardness (Shore 00) | ASTM D2240 | 55° | 75° |
| Elongation at Break | ISO 1798 | 130 % | 310 % |
| Tensile Strength | ISO 1798 | 0.5 MPa | 0.9 MPa |
| Compression Deflection | ASTM 1056 | 40 kPa | 80 kPa |
| Compression Set | ASTM D395 | 25 % | 15 % |
| Fire Rating | UL 94 V | V-0 (Pass) | V-0 (Pass) |
| Limiting Oxygen Index | ISO 4589-2 | 42.0 | 43.5 |
| Smoke Density | ISO 5659-2 | 26.95 | 32.52 |
| Toxicity | NFX 70-100-1 and 2 | <0.021 | 0.021 |
