3M Sealing Tape 8777, Tan, 3 in x 75 ft, 12 Rolls/Case, Solid Liner The 3M Sealing Tape 8777 is a self-adhesive barrier for use in the construction industry to seal window and door openings against moisture intrusionThe tape has an aggressive acrylic adhesive and thin, proprietary backing. Product Information Brand 3M Part # 7100025184 Adhesive Type Acrylic Length 75 FT Width 3 Inch Origin Country USA Product Type Sealing Tapes Product InformationAdhesive provides a combination of both cold temperature and hot temperature adhesion to most substratesAggressive acrylic adhesive stays stuck at both low and high application temperaturesBacking is thin and conformable to help conveniently fit into cornersDesigned to adheres to damp surfacesHigh tack adhesive sticks and stays stuck to many difficult to stick to surfacesNo adhesive melting or staining in summer heatSplit release liner offers fast application with easy and accurate positioning of the tapeUnique backing is thin and conformable to conveniently fit into corners