Patco 503A Colored Polyethylene Tape This product offers durability, excellent conformability and a solvent resistant backing combined with an aggressive permanent adhesive system. Applications Excellent for decorative markings, color coding, striping, and as a protective overlaminate. Thermal insulation outer wrap. Features & Benefits ---Excellent moisture barrier.---Excellent long-term aging.---Provides a permanent seal indoors or outside.---Will 0t crack or craze after extendedexposure.