FLEX SEAL LIQUID is actually liquid rubberized coating in a can! Similar to our Flex Seal Spray, but now you can brush it, roll it, dip it or pour it anywhere you need a watertight, flexible coating or sealant. Our patent pending, proprietary formulation starts out as a thick liquid and dries to a super strong and flexible, watertight, rubberized coating that protects and helps stop leaks fast.