3M™ Scotch-Weld™ Repair Paste 2220 is a clear two-part urethane repair paste that cures to an erosion-resistant elastomer. This tough paste is designed to repair polyurethane films commonly used for erosion protection on aircraft.The 3M Scotch-Weld Repair Paste 2220 comes in Duo-Pak cartridges designed for use with our 3M EPX Applicator System for fast, clean application, leaving you with a portable, easy-to-apply system. The results are a durable protective surface that provides powerful protection year after year. The clear two-part urethane repair paste cures to an erosion-resistant elastomer make it suitable to repair polyurethane coatings or films commonly used for erosion protection on aircraft, including helicopter rotor blades, leading edges, engine components and other areas susceptible to erosion damage, especially from sand or rain.