Rust-Oleum LeakSeal Flexible Rubber Coating

Leak Seal Brush features an easy-to-use formula that creates a flexible rubber coating to fill and seal leaks and cracks instantly. Watertight seal prevents moisture penetration, rust and corrosion to ensure your surfaces are completely protected. Plus, it dries to a paintable finish for discreet use virtually anywhere. Leak Seal Brush is perfect for gutters, roofs, flashing, ductwork, Pvc, masonry, concrete and more.