Integrated High Durability Fire Door Seal Strip Intumescent Smoke Seals For Door Perimeters

Brush Integrated Intumescent Fire Seal – Smoke and Flame Barrier for Door Perimeters

Product Overview This dual-function fire seal combines an intumescent strip with a nylon brush for effective sealing against both smoke and flames. Designed for use on doors requiring acoustic and smoke control.

Features Combines fire and smoke sealing Brush reduces noise and air gaps Clean aesthetic with low profile Expands quickly during fire event.

Technical Specifications Intumescent Material: Graphite-based Brush Type: Nylon, Flame-resistant Thickness: 4mm–6mm Brush Length: 5mm–13mm Expansion Temp: 180–210°C Standard Length: 2.1m per piece.

Applications Soundproof fire-rated doors Hospital and lab door frames Apartment entryways Mechanical room enclosures.

Customization Options Brush color and density options Intumescent strip dimensions Cut-to-size or coiled supply Fire test report labeling.

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.