Flex Tape super strong adhesive. Thick rubberized backing. Even works underwater. Super strong, rubberized, waterproof tape that creates a flexible, rubberized, waterproof barrier. Specially formulated with a thick, flexible, rubberized backing that conforms to any shape or object. This powerful adhesive can be applied hot or cold, wet or dry, even underwater. Instantly seals out water, air and moisture and can patch, bond, seal and repair virtually everything. Extra wide to quickly cover large cracks, gaps and holes. It is UV resistant, environmentally friendly-VOC-free and has a wide temperature range so it can be used in extreme weather conditions.