RH-8001 PU-Foam Injection Agent is a single-component hydrophillic polyurethane resin. It reacts exclusively in the presence of water. Upon contact with water, it rapidly absorbs large amounts of moisture, forming a highly elastic, sponge-like texture with excellent waterstopping capabilities once fully reacted. This versatile injection agent is ideal for leak-stopping applications in civil structures and construction projects such as structures, basement, concrete, wall joints and cracks, and more.