3M™ Scotch-Weld™ Metal Primer EC-3901 is a primer for 3MT(M) Scotch-Weld™ film and liquid adhesives in those applications where it is desired to obtain improved metal and glass adhesion.
Single step primer for windshields to promote urethane adhesion to the windshield; can also be used to touch up pinchweld scratches and to primer encapsulated glass.
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