Flex Seal Marine Sealant coats, seals and protects. It stops leaks fast, making repair jobs easier. This clear liquid rubber sealant is excellent for boats, yachts, canoes, kayaks, restoration projects, decking, hull, canopies, weather stripping and so much more. It helps to prevent rust, corrosion and water intrusion on your watercraft. Its clear coloration prevents it from standing out on your ship, hiding your repairs and keeping your ship looking pristine.