3M™ Duct Tape 3939 Silver

3M™ Duct Tape 3939 is composed of a waterproof polyethylene film over cloth scrim backing with a rubber adhesive used for demanding duct tape applications. 3M™ Duct Tape 3939 offers easy tear and conformability. Individual roll wrap preserves integrity of the roll for less waste. The product number is printed in core to insure the correct product is used. Good moisture resistance. Has good tensile strength for tough applications. Rubber adhesive that adheres aggressively to most surfaces for good holding power and a tight seal. Tested according to UL 723 and ASTM E84. Typical physical and performance characteristics include: thickness: 9.0 mils, adhesion to steel: 55 oz./in. width, tensile strength: 25 lbs./in. width, elongation at break: 17%, temperature use range: Up to 200(deg)F. Silver.