Finger Type Expansion Joint STEEL-ELASTOMERIC-003

The Compression Seal Expansion Joint System offers a cost-effective and maintenance-friendly solution for small to medium movement ranges in bridge construction. This system utilizes high-performance EPDM rubber compression seals that are mechanically anchored into steel or aluminum extrusion profiles, creating a watertight and flexible joint capable of accommodating thermal movements while preventing water and debris infiltration into the bridge structure. Our compression seal systems are manufactured using premium-grade EPDM rubber compounds specifically formulated for bridge applications, ensuring excellent resistance to ozone, UV radiation, and chemical exposure. The rubber profile features an optimized cross-sectional design that provides consistent compression forces across the entire movement range, maintaining effective sealing performance throughout the joint's service life. The system's simple installation process and minimal maintenance requirements make it an economical choice for a wide range of bridge projects. **Design Standards Compliance:** This product meets all requirements specified in European Standard EN 1337-3 for elastomeric bearings and American Standard ASTM D4014 for rubber property testing. Our EPDM compounds comply with ASTM D2000 specifications for automotive rubber products, ensuring superior material performance. The manufacturing facility operates under ISO 9001:2015 quality management certification, and all products undergo rigorous testing including accelerated aging tests per ASTM D573 and ozone resistance testing per ASTM D1149. **Technical Specifications:** - Movement Capacity: 20mm to 120mm - Rubber Material: EPDM (Ethylene Propylene Diene Monomer) - Hardness: Shore A 60±5 - Tensile Strength: ≥10 MPa (ASTM D412) - Elongation at Break: ≥400% (ASTM D412) - Compression Set: ≤25% at 70°C for 22 hours (ASTM D395) - Ozone Resistance: No cracking at 50 pphm for 168 hours (ASTM D1149) - Temperature Range: -45°C to +80°C - Service Life: 20+ years **Application Scenarios:** Compression seal expansion joints are widely used in highway bridges, parking structure expansion joints, bridge deck joints, and pedestrian bridge applications where movement requirements are relatively modest. The system excels in environments where waterproofing is critical, such as bridges over waterways, coastal bridges exposed to salt spray, and urban bridges where de-icing salts are regularly applied. With over 1,000 successful installations across diverse climatic zones, this system has proven its reliability in both temperate and extreme weather conditions.