3M™ Scotch-Weld™ Plastic & Rubber Instant Adhesive PR1500 is a medium viscosity instant adhesive. The PR1500 instant adhesive is formulated to give exceptional performance on difficult-to-bond substrates, such as EPDM, nylon, polypropylene and polyethylene with use of an appropriate primer. Once applied, the glue has fast handling time and cure to keep jobs moving quickly.