This EPDM Perforated Flat Swelling Rubber Waterstop is a high-performance sealing solution designed for building bridges, road and bridge expansion joints (accordion-type). Made from durable EPDM rubber, it features a perforated, tube-integrated structure that swells to block water penetration, adapting to joint movements (expansion/contraction) in infrastructure projects. Its robust design resists weather, corrosion, and aging, boosting waterproofing reliability in construction, highway, and bridge engineering. H