3M(TM) Adhesion Promoter 86A Transparent, 1 pt, 12 per case Use with 3Mâ„¢ Polyurethane Protective Tape to enhance initial adhesion in demanding situations. Promotes faster ultimate adhesion to certain surface types (polyurethane paint, epoxy primers, epoxy composites). Companion product for use with Polyurethane protective tapes and paint replacement film technologies.