Fire-Resistant Expansion Joint Rubber Strip – Flame Retardant Sealing for Buildings and Tunnels

This expansion joint rubber strip is made from flame-retardant EPDM or silicone, offering safety-focused joint sealing for high-risk environments like tunnels and utility facilities.

Features

Self-extinguishing material

Low smoke and toxic gas emission

Maintains sealing under high temperatures

Weather and ozone resistant

Technical Specifications

Material: Fire-rated EPDM/Silicone

Fire Rating: UL94 V-0 or EN 13501

Thickness: 6–20 mm

Hardness: Shore A 55–75

Operating Temp: -40°C to +180°C

Smoke Index: ≤ 30%

Applications

Subway and railway tunnels

Underground utility channels

Fire-resistance wall joints

Chemical and battery rooms

Customization Options

Custom flame-retardant compounds

Integrated fire barrier foil

Joint width and thickness customization

Laser-engraved logos optional

Shenzhen Xunzhi Building Materials Industrial Co., Ltd. is an integrated enterprise specializing in design, production, and sales, with many years of experience in manufacturing and technical product development. The company has two subsidiaries: Hong Kong Ruisong Technology Co., Ltd. and Sanya Ruisong Technology Co., Ltd. It is a professional manufacturer of door and window seals, curtain wall seals, and vehicle door sealing strips, providing one-stop rubber sealing solutions to global customers for many years.

We specialize in the production and processing of various sealing and molding products, including PVC (Polyvinyl Chloride), EPDM (Ethylene Propylene Diene Monomer), high-grade thermoplastic rubber (Santoprene), silicone rubber, dual-hardness sealing strips, rigid decorative strips, EVA single- and double-sided adhesive products for doors, windows, and curtain walls, as well as molded parts and plastic-rubber injection components.

The company is equipped with a strict quality assurance system, comprehensive testing procedures, and excellent after-sales service. Our products are highly recognized and praised by industry professionals, and are exported to Europe, America, Southeast Asia, and Hong Kong and Macao regions.