3" x 1000 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.