White with blue film liner, 8.3 mil (0.20 mm) glass cloth tape with thermosetable rubber-resin adhesive. 3650 tape is a poly-linered version of 365 tape. Used for many applications requiring high adhesion and a very strong comformable backing. The high tensile strength and temperature resistance of the backing, combined with the high holding power and flow properities of the thermoset adhesive allow this tape to work well for splicing many materials with rough surfaces or low internal strength such as roofing felt and textiles.