3m Polyurethane Sealant Pu 540

3M™ Polyurethane Sealant 540 is a single-component, moisture-curing, polyurethane sealant used to bond a wide variety of materials, including plastics, fiberglass reinforced plastic (FRP), sheet molding compound (SMC), aluminum, steel, coated metal and wood. It exhibits high tensile strength, good UV resistance, low Shore A hardness and low modulus to maintain its functionality in a wide range of extreme service environments. Available in cartridge, sausage pack, pail and drum volumes to meet your application needs. Multi-purpose bonding and long lasting seals Permanently elastic to allow joint movement 60-90 skin time; paintable, once skin forms Good UV resistance One component, moisture-curing sealant simplifies production Bonds dissimilar materials for increased design flexibility Gap filling capability 3M™ Polyurethane Sealant 540 is an all-purpose, single-component, moisture-curing, gap-filling polyurethane that creates permanently elastic seals and bonds in a wide variety of service environments.