As a thick and strong clear sealant paste, it's perfect for filling large gaps, cracks, and holes, creating a strong, flexible, and crystal-clear waterproof seal. With its Advanced Hydrophobic ...

The claim. Flex Seal "stops leaks fast and is the easy way to coat, seal and protect almost anything," the manufacturer says. In a promo video, pitchman Phil Swift applies Flex Seal to a screen ...

Most caulking mistakes occur when the product dries out, revealing cracks and imperfections that moisture can enter. A good, ...

Flex Paste ® Clear is a transparent, super thick rubberized paste that clings to virtually any surface, instantly sealing out water, air, and moisture. This Flex Paste line extension provides powerful ...