Krylon Rust Tough Acrylic Spray Paint. Stop rust before it happens. Spray Krylon Rust Tough Rust Preventative Enamels directly on your metal surfaces. It chemically converts any rust formation to a black waterproof primer. It stops future rust from forming and dries to the touch in less than 30 minutes. Superior fade resistance. Easy soap and water cleanup. Low odor. Long-lasting rust protection. One-coat coverage.