Business Source - BSN44415 Heavy-duty packaging tape delivers a firm, strong bond with acrylic adhesive. Ideal for mailing, shipping and storage. Pressure-sensitive poly material resists abrasions and splitting, assuring safe delivery of boxes. Packaging tape conforms to box surfaces to keep out moisture, dust and dirt, and features a 3" core and a 2.5 mil thickness. Tape meets US postal regulations for standard packages.