3M™ 500-Series Polyurethane Construction Sealant, Polyurethane Sealant and Polyurethane Adhesive Sealant products are one component, moisture curing products which form permanent elastic bonds. They bond to a wide variety of materials including plastics, metals, fiberglass, and wood. They are formulated to have a wide
variety of Shore A hardness, open times, and performance parameters to meet many application needs.They bond to a wide variety of materials including plastics,FRP, SMC, aluminum, steel, coated metal, and wood.These can be used for seamless sealing of the sedimentation tanks of the sewage treatment plants to fill expansion gaps in concrete. These are acclaimed widely for ease of application that requires no mixing, and curing is not affected at a wide range of temperatures. It has negligible shrinkage with good elastic recovery. These have excellent tear strength and remain elastic for life.