3M™ Bare Metal Seam Sealer 08310 is a tough, flexible sealing material formulated for sealing bare metal joints, such as steel or aluminum. This heavy-bodies, self-mixing 2-part epoxy sealer can be easily caulked, tooled, or brushed into both vertical and horizontal seams. Curing in as little as 15 minutes, it leaves permanently felxible bonds that prevent shrinking, cranking, and outgassing, making 3M™ Bare Metal Seam Sealer 08310 a great choice for automotive collision repair.