2" x 55 Yd Clear 2.3 mil Polypropylene Box Sealing Tape with Natural Rubber Adhesive is Used for box sealing. This 2.3 mil Polypropylene Box Sealing Tape with Natural Rubber Adhesive uses a Natural Rubber Adhesive application. With a tensile strength of 31 lbs/in., 2.3 mil thick tape features 26 oz/in. of adhesion and an elongation of 130%. 2.3 mil Polypropylene Box Sealing Tape with Natural Rubber Adhesive can also withstand temperatures ranging from 0? - 150? Fahrenheit.