9 mil Polyethylene Tape is a very versatile tape. Polyethylene tape is waterproof and highly conformable. It's permanent synthetic rubber adhesive sticks to difficult surfaces for outdoor and indoor use. Secure boat covers or simply line doorways and windows for temperature control. 9 mil polyethylene tape is available in yellow, blue, red, black, white, and clear. Don't forget to ask us how this item can be custom printed.