Flex Paste 1 lb. White Tub. Can be applied to dry or wet surfaces and even under water. Dries to a super thick flexiblerubber paste that clings to surfaces and instantly fills large gaps, cracks, and holes. Can be painted any color, shaped and molded to take on any form and is perfect for DIY and handyman projects, crafts, hobbies and more. Non flammable, chemical and mildew resistant.