2" x 55 Yd Clear 2.5 mil Polypropylene Box Sealing Tape with Hot Melt Rubber Adhesive is Used for box sealing. This 2.5 mil Polypropylene Box Sealing Tape with Hot Melt Rubber Adhesive uses a Rubber Adhesive application. With a tensile strength of 38 lbs/in., 2.5 mil thick tape features 46 oz/in. of adhesion and an elongation of 100%. 2.5 mil Polypropylene Box Sealing Tape with Hot Melt Rubber Adhesive can also withstand temperatures ranging from 35? - 140? Fahrenheit.