3" x 55 yds. Clear (6 Pack) 3M 375 Carton Sealing Tape. Super strong pressure sensitive polypropylene tape for economical, repetitive volume packaging. Superior performance packaging tape. Features the strongest conformable backing and the most consistent adhesive system available. Scotchpro film backing is water resistant for added security. The "problem solver" for difficult packaging applications. Tough polypropylene backing with synthetic rubber adhesive.