Use this box sealing tape if you want a reliable, strong and durable tape. The 100% polypropylene film is flexible, waterproof, split-, burst- and stretch-resistant--meaning you can use it in a variety of environments. The standard holding power is designed for use on cartons up to 25 lbs. Plus, with a tensile (bursting) strength of 28 lbs., the tape becomes a quick and easy way to seal a wide range of box types and sizes. Utilizes a hot melt adhesive for a superior grip. Tape Type: Hot Melt Packaging.