Rust-Oleum 267972 12-Ounce Leak Seal Flexible Rubber Sealant, Aluminum The product is 12OZ Aluminum LeakSeal Spray Provides A Water Tight The product is manufactured in United States Dries to a semi-smooth firm finish Coating will not sag or drip Can be top-coated with latex or alkyd based paints Great for gutters roofs flashing ductwork pvc drains masonry concrete and more Can actively build to fill gaps small holes and cracks