3M™ Polyolefin Adhesion Promoter is a specially formulated adhesion promoter for use when repairing low surface energy plastics such as thermopolyolefin (TPO). Use our adhesion promoter with 3M brand adhesives. 3M™ Polyolefin Adhesion Promoter is designed specifically for polyolefin and ethylene propylene plastic identified by the marks PP, EP, TPO or EPDM on the back of the part.