3" x 60 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.