Adhesion Promoter XPPPQ is a uniquely formulated blend of proprietary resins that create a chemical bond on "difficult to bond to" plastics allowing adhesion of repair fillers and coatings to these substrates. Adhesion Promoter prepares properly cleaned and/or repaired parts for the application of adhesives, fillers and topcoats. Adhesion Promoter is also used as an excellent “sealer” for all Flexible and Semi-Rigid plastics including TPO and TPE.