3M™ Sealing Tape 8777 is a translucent tape with a proprietary film backing and high-tack acrylic adhesive available on a split liner. We designed this self-adhered tape for difficult-to-stick surfaces, including damp surfaces. This sealing tape has an adhesive that withstands heat and will not melt or stain in high temperatures.3M™ Sealing Tape 8777 is a translucent tape with a proprietary film backing and high-tack acrylic adhesive available on a split liner. We designed this self-adhered tape for difficult-to-stick surfaces, including damp surfaces. This sealing tape has an adhesive that withstands heat and will not melt or stain in high temperatures.