3M Bare-Metal Seam Sealer – Beige uses two part epoxy technology to provide a tough yet flexible material for the sealing of joints of bare metal as well as primed or painted substrates such as steel or aluminum enclosures. This material provides quick cure time and non – sag properties that aid during vertical applications, and allow top coating with paints within 15 min under normal conditions. 3M Bare-Metal Seam Sealer – Beige contains chemical corrosion inhibitors.