3" x 1000 Yd Clear 2.9 mil Polypropylene Box Sealing Tape with Hot Melt Rubber Adhesive is Used for box sealing. This 2.9 mil Polypropylene Box Sealing Tape with Hot Melt Rubber Adhesive uses a Rubber Adhesive application. With a tensile strength of 50 lbs/in., 2.9 mil thick tape features 65 oz/in. of adhesion and an elongation of 110%. 2.9 mil Polypropylene Box Sealing Tape with Hot Melt Rubber Adhesive can also withstand temperatures ranging from 35? - 140? Fahrenheit.