Product details:

Flex Paste is a super thick rubberized paste that clings to the surface and instantly fills large gaps, cracks and holes. Once dry, Flex Paste turns into a strong, flexible, watertight, rubberized coating that seals out air, water and moisture on a variety of surfaces and objects. Use Flex Paste on a wide variety of surfaces such as wood, glass, tile, concrete, aluminum, metal, brick, stucco, masonry, copper, fabric, fiberglass, ceramic, porcelain, natural stones, roofing, PVC, polyurethanes and more. Flex Paste adheres to a variety of surfaces. However, it may not adhere to certain plasticized or rubber surfaces. One pound of Flex Paste provides about 10 linear ft at 2 inches wide with a layer thickness of approx. 1/16th inch. Flex Paste can be applied on dry or wet surfaces and even underwater. It won't dissolve or wash away and even dries underwater. For best results apply a generous amount to the surface using firm pressure. Can be used as a sealant.