3M™ Adhesion Promoter K520

K520 is a type of adhesion promoting primer which provides a superior adhesion after coating and drying. It can be used in conjunction with 3M double-coated tapes, especially Acrylic Foam Tape, for adhering to Polypropylene (PP) and Ethylene Propylene Diene Monomer (EPDM) etc.. It shows a superior initial adhesion strength, especially in winter compared to the K500 primer