3M Adhesion Promoter K500 is a versatile moisture-cured liquid promoter specifically formulated to improve the adhesion of 3M Acrylic Foam Tape to materials used for exterior trim attachment in automotive applications.With its ready-to-use formula, 3M Adhesion Promoter K500 can be easily integrated into existing workflows using common application equipment. It enhances bond strength to a range of materials including acrylonitrile butadiene styrene (ABS), chlorinated rubbers, ethylene propylene diene monomer (EPDM), acrylonitrile ethylene styrene (AES), polypropylene (PP), thermoplastic olefin (TPO) and certain polyethylene terephthalate (PET)/polybutylene terephthalate (PBT) blends.