Flex Paste Super Thick Rubber Paste is a versatile sealant designed for a variety of uses. It is a super thick rubberized paste that can cling to any surface to fill gaps, cracks, and holes. Once dry, it becomes a strong and flexible rubberized coating, effectively sealing out air, water, and moisture. It is applicable on both wet and dry surfaces and can even dry underwater. The product is paintable, UV and chemical resistant, and is not affected by mildew. Its non-flammable composition does not shrink over time. The paste can create watertight seals around windows and doors, offering protection against flood damage and can also be used to prevent the intrusion of insects and rodents by sealing gaps and cracks. This paste is suitable for a wide range of applications including DIY projects, crafts, and hobbies. It is manufactured in the USA.