Butyl Putty Tape Window Flange Tape Camper RV Roof and Window Sealant (1/8" x 3/4" x 30') Butyl Putty Tape molds to the shape you need for waterproofing RVs, Trailers, Motohomes, Boats, Etc. Non-hardening with Excellent sealing properties Increases in adhesion with age 1/8 Inch X 3/4 Inch X 30 Feet Color: Off-White