Preformed Rubber Expansion Joint Strip – Heavy-Duty Industrial Sealing Solution for Movement Gaps

A preformed rubber strip designed for structural movement joints in heavy-duty and industrial applications. Built to withstand chemical exposure, thermal shifts, and mechanical wear.

Features

Highly resilient under cyclic stress

Abrasion and oil resistant

Suitable for submerged or exposed use

Low maintenance with long-term sealing

Technical Specifications

Material: NBR, EPDM, CR

Hardness: 55–80 Shore A

Size: As per drawing

Elongation: ≥ 250%

Compression Set: ≤ 20%

Service Temp: -30°C to +130°C

Applications

Factories and production facilities

Fuel and oil processing plants

Tunnels and underground vaults

Industrial trench joint sealing

Customization Options

Tailored cross-section profiles

Fire-retardant compounds

Dual hardness co-extruded strips

Custom surface texturing

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.