Pre Applied Water Swelling Rubber Tape Bonded Expansion Seal for Rebar and Concrete

Product Overview This water-swelling rubber tape is pre-applied to steel rebar or formwork before concrete casting. Upon water exposure, it expands to seal cold joints and prevent seepage.

Features Ideal for pre-application to reinforcement steel Expands reliably when in contact with water Suitable for complex concrete interfaces Quick installation on rebar grids.

Technical Specifications Material: Hydrophilic rubber Initial Size: 10×5mm, 20×10mm, 25×7mm Expansion Capacity: 200–400% Bonding Strength: ≥ 1.2 MPa Working Temp: -25°C to +70°C.

Applications Raft slabs with heavy steel structures Concrete shear wall construction Pile cap waterproofing Shallow tunnels with tight reinforcement.

Customization Options Pre-rolled lengths or cut sections Reinforced mesh embedded option Color customization on demand Contractor-branded packaging.

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.