Flex Paste PFSBLKR32 As Seen on TV Super Thick Rubber Paste, 3 LbsFlex 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. Highlights: Size: 3 Lbs Color: Black Height: 5 inch Width: 5 inch Length: 5 inch Can be applied on dry or wet surfaces and even underwater it won't dissolve or wash away