3M Urethane Seam Sealer 08361 is a high-solids seam sealer ideal for sealing automotive and RV seams and joints. It adheres well to bare metal, primed metal and painted surfaces, and if desired can be smoothed to a featheredge and/or brushed. Tack free and paintable after 30-45 minutes, this urethane formula is permanently flexible and offers superior performance to solvent-based sealers. Cure Time: 24 Hours Handling Time: 10-20 Minutes Work Time: 5-10 Minutes