3M™ Vinyl Duct Tape 3903 it has an embossed vinyl backing that is easy to tear and conforms well to irregular surfaces. Offers a rubber adhesive that sticks well to many substrates and unwinds easily off the roll. Typical physical and performance characteristics include: thickness: 6.3 mils, adhesion to steel: 20 oz./in. width, tensile strength: 14 lbs./in. width, elongation at break: 150 percent , temperature use range: Up to 250(deg)F.