Premium Rubber Water Swelling Waterstop for Building, Tunnel & Subway Construction
High-performance EPDM/PVC compound ensures superior expansion (up to 300%) upon water contact, creating a permanent seal against leaks. Precision-molded edges and uniform thickness (10mm/20mm customizable) guarantee perfect fit for joint gaps in concrete structures. Ideal for critical infrastructure: subway tunnels, basements, water treatment plants, and reservoirs. Resists chemicals, UV, and extreme pressures (tested to 0.8MPa). Prevents corrosion and structural damage long-term. Pre-cut lengths (5m/10m rolls) for fast installation. Meets ASTM/ISO standards. Bulk discounts available – global wholesale leader with factory-direct pricing.