Use Scotch's strongest packaging tape so even the heaviest packages can withstand rough handing. It holds strong on all box types, including 100 percent recycled boxes. It's even guaranteed to stay sealed. The strong, tough, solvent-free hot melt adhesive locks in your heavy duty contents & locks out everything else. You don't need layers of tape to get the job done – just one strip at a time so you save time. Tape meets U.S. Postal Regulations for standard packages.