This Flex Seal rubberized sealant spray coating sprays out as a liquid, seeps into cracks and holes and dries to a watertight, flexible coating. It's an easy way to coat, seal and stop leaks fast. ⚠ WARNING: California Proposition 65 Warning. This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www. P65Warnings. ca. gov Safety Data Sheet . Can be used on wet or dry surfaces. This rubberized sealant spray coating sprays out as a liquid, seeps into cracks and holes and dries to a watertight, flexible coating. Won't sag or drip in summer heat. Stays flexible and pliable. 14 oz. capacity. Once completely dry, it can be painted any color. Comes in black. Stops vibrations and deadens noise. Doesn't crack or peel in winter cold. Stops leaks fast