Scotch Box-Sealing Tape 375 securely closes a wide variety of boxes and cartons, including those with high recycled content. Polypropylene backing resists abrasion, moisture, chemicals and scuffing to hold strong throughout the shipping process. Conformable backing flexes under stress for a tight seal, even around edges and on rough surfaces. Design also includes hot-melt, synthetic rubber resin adhesive; a 3" core; and tensile strength of 35 lb. per inch.