2" x 1000 Yd Clear 2 mil Polypropylene Box Sealing Tape with Natural Rubber Adhesive is Used for box sealing. This 2 mil Polypropylene Box Sealing Tape with Natural Rubber Adhesive uses a Natural Rubber Adhesive application. With a tensile strength of 31 lbs/in., 2 mil thick tape features 23 oz/in. of adhesion and an elongation of 102%. 2 mil Polypropylene Box Sealing Tape with Natural Rubber Adhesive can also withstand temperatures ranging from 0? - 150? Fahrenheit.