Seymour’s Rust Converter & Primer can be applied to any iron or steel surface to penetrate rust and turn it into a protective black coating. This protective coating will be resistant to moisture and prevents future rust growth. Just remove any loose rust, then apply it like a primer to rusted surfaces. Greatly reduces time spent wire brushing and sanding. A topcoat is required for maximum rust protection. Ideal for vehicles, trailers, fences, railings, sheet metal, and storage tanks. Restores any iron or steel surfaces to a like new appearance. Penetrates rust and turns into a protective coating. Prevents surfaces from future rust growth. Dry times: (10 min. to touch), (24 hrs. to recoat/topcoat).