This 14 oz. Flex Seal Black Aerosol Liquid Rubber Sealant Coating is actually liquid rubber in a can! It sprays out as a thick liquid, seeps into cracks and holes and dries to a watertight, flexible, rubberized coating. Flex Seal coats, seals, protects and will Stop Leaks Fast! Flex Seal's great for roof leaks, gutters, skylights, hoses, window sills, PVC pipes, flashings, duct work, foundations, awnings, chimneys, downspouts, vent pipes, A/C drip fans, RVS and campers, trailers and so much more! Comes with 14 oz. of product.