AC 135 A. C. Tech Adhesion Promoters Polysulfides SEALANT AC-135 Adhesion Promoter AC-135 is an adhesion promoter for polysulfide sealant used on metal and/or solvent-resistant coatings. It contains mixed solvents blended with a surface activator agent, which produce an adhesion promoter meeting current industry VOC, ODC and HAP requirements. P6140 - Meets Requirements Adhesion promoter. Contains mixed solvents blended with a surface activator agent. Used for polysulfide sealants used on metal and/or solvent-resistant coatings.