3m scotch weld cyanoacrylate adhesive ec40 3m gs200043973 scotch weld ec40 is a low viscosity ethyl cyanoacrylate based adhesive it is suitable for bonding a wide range of materials where fast curing speed is required ec40 has been specially formulated for high strength general purpose bonding of most plastics rubbers metals and other common materials it is recommended for use on assemblies with close fitting parts and smooth even surfaces 3m gs200043973 scotch weld cyanoacrylate adhe