Flex Tape strong rubberized waterproof tape stops leaks instantly. Flex Tape as seen on TV grips on tight and bonds instantly creating a super strong waterproof seal. So strong it even works underwater. Triple thick adhesive virtually welds itself to most surfaces. Great for roof leaks, gutter, down spouts, boats, canoes, outdoor and camping gear, PVC and plumbing pipes, pools, spas, ducts, DIY projects and so much more. Use on PVC, acrylic, metal, steel, copper, aluminum, ceramic, glass, rubber, fiberglass, dry wall, cement and so much more.