Flexible Liquid Rubber Seal Flex Spray Sealant by Perma Seal - instant leak sealant & coat anything - Gray/Aluminum 16 OZ (1 Pack) Sprays out 100% rubber liquid that seeps into cracks and holes to stop leaks fast Prevents moisture penetration, rust, mold, UV rays and corrosion Fast drying, instant leak sealer with a durable rubberized coating is 100% waterproof Perma Seal  will seal virtually any surface leaving behind an extraordinary elastic, strong and permanent barrier Can be used on: PVC Drains, Gutters, Ducting, Roofs, Flashings, All Metals, Pluming, HVAC Units, Wood, Fiber Glass, Dry Wall, Concrete, Asphalt, Decking, Piping, Plastics, Cracks, Holes, Leaks, Fissures, Joints, Docks, Marine, RVs, Boats, Farm Equipments, Automotive, Motorcycles, Snowmobiles, Trailers, Cooler Pans, Cement Cracks, Repairs & Restorations