Rust-Oleum has introduced LeakSeal Flexible Rubber Coating, a rubberized utility coating designed to stop and seal leaks instantly. The spray fills and seals leaks and cracks, providing a flexible watertight seal that prevents moisture penetration, rust and corrosion. It has a high-build formula specifically developed to fill cracks, gaps and holes while maintaining superior flexibility even with temperature changes and UV radiation the company said. LeakSeal can be used to seal leaks and cracks on metal, vinyl, plastic, PVC, concrete and other surfaces year round. It can be used to seal skylights, roofs, ductwork, vinyl, plastic, metal roofs and vents. Ideal for both homeowners and maintenance professionals, it is also designed for use on gutters, downspouts, pipes, air conditioner drip pans and units, PVC, metal buildings and sheds, flashing, shingles, concrete foundations and more. LeakSeal dries to a semi-smooth, firm black finish that will not sag or drip and can be top-coated with any latex- or alkyd-based paint.