The Ideal Primer for Windshield Replacement: Specifically for use during windshield replacement jobs, 3M Single Step Primer is a one-part primer that promotes adhesion of urethane adhesives to glass. It is very versatile - you can use it for a range of windshield types including those with pre-applied adhesive (PAAS) systems or PVC/encapsulated glass. This fast-drying one-part primer requires no activator. It is excellent for corrosion protection when used for minor touch-ups on pinchweld scratches. It also features excellent UV resistance, making it ideal as a black-out primer for protecting urethanes and promoting long-lasting windshield installations. 3M Single Step Primer works well with all 3M Auto Glass Urethane Windshield Adhesives, and is best applied with a 3M rethane Primer Dauber PN 08688. Recommended Applications:Priming automotive glass prior to bonding with 3M Auto Glass Urethane Windshield Adhesive. Coating minor, bare metal scratches on pinchwelds to prevent corrosion. Promoting urethane adhesion to PVC/encapsulated parts. Primer for PAAS windshield systems Science and Experience from 3M: 3M Single Step Primer is another great example of how 3M provides science combined with experience for the most specific jobs. From its easy-to-use one-part formula to its excellent UV resistance, it is designed for use with auto glass and urethane adhesives to help you replace efficiently and effectively.