Don t let moisture corrosion and other factors break down and damage home surfaces - protect your investments with Rust-Oleum s innovative Leak Seal Flexible Rubber Coating. Designed to fill seal and create a full barrier while remaining bendable and supple to prevent breaking or fracturing. Specialized coating includes Rust-Oleum s proprietary Stops Rust formula to prevent rust and is available in both aerosolized sprays and brush on cans.