2-In-1 Rust Converter & Metal Primer, 101.5Oz Black Rust Inhibitor Paint for Met por | 18 Jul 2026It dries to a flat, paintable finish. Apply 2–3 thin coats for best results. Use within 72 hours of opening for maximum performance.Do not rub or scrape it once dry. Compatible with oil & latex ✔ ✔ ✔ ✔ ✔ ✔.