3M Edge Sealer Tape 8914 – 1 Mil Cast Scotchcal™ Optically Clear Edge minimizes the adverse effects of rigorous use or prolonged or severe exposure conditions by providing water and contaminant-tight seal between a graphic film and substrate. This 3M Edge Sealer Tape is required for some 3M warranted graphics (refer to the base film’s Product Bulletin for details). Edge sealer 8914 is a pressure-sensitive, optically clear tape with a clear polyester liner used to seal vehicle perforated window graphics and for sealing cut edges and seams on watercraft graphics, Car, and Truck Wraps.