Rapid Reacting Water Swelling Rubber Cord Swell Cord for Pipes and Penetration Seals

Product Overview This round-profile swellable rubber cord is designed for use around pipe entries and penetrations through concrete structures. It expands rapidly to stop leakage paths.

Features Flexible round cord form for annular spaces Quick swelling and gap filling No adhesive needed Reusable and cuttable.

Technical Specifications Material: Fast-reacting hydrophilic rubber Cord Diameter: 6mm, 8mm, 10mm Expansion Rate: Up to 400% Temp Range: -25°C to +75°C Compression Strength: ≥ 1.5 MPa.

Applications Pipe and conduit entries Electrical duct penetrations Manhole and chamber entries Prefabricated wall joints.

Customization Options Diameter and length as required Color-coding per pipe type Coiled packaging or pre-cut lengths Custom barcode labels.

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.