Flex Seal Liquid Rubber in a Can, 32-oz, Black Flex Seal Liquid is liquid rubber in a can! Now you can brush, roll, dip or pour it on! Use anywhere you need a watertight, flexible rubberized coating Goes on smooth and covers fast, sealing out water, air and moisture Non-hazardous, non-toxic, non-flammable, UV-resistant. Even safe for plants and animals Prevents rust and corrosion. Mildew and chemical resistant