3M™ Urethane Seam Sealer is a high-solid solution for sealing automotive/RV seams and joints. It adheres well to bare metal, primed metal, and painted surfaces, and can be smoothed to a featheredge and/or brushed is desired. Tack free and paintable after 30-45 minutes, this urethane formula is permanently flexible and offers superior performance to solvent-based sealers. Its clean finish, pliable bonds, and resistance to heat and humidity allow 3M™ Urethane Seam Sealer to excel across both interior and exterior applications.