3M™ Scotch-Weld™ Metal Primer 3901 is a primer for 3M™ Scotch-Weld™ film and liquid adhesives in those applications where it is designed to improve metal and glass adhesion or improved resistance to environmental exposure with epoxy and urethane adhesives. Features of Primer 3901 are that it ensures complete wetting of film adhesive to adherend surfaces. It simplifies production scheduling by protecting the cleaned surfaces until the bonding operations can be completed. Imparts improved corrosion protection to metal.
