U-POL Zinc 182 Primer Anti Rust 450ml Aerosol. A highly effective rust inhibiting single pack primer which is ideal for all ferrous metal surfaces. It is supplied ready for use and when dry hardens to form a tough durable coating that can be overcoated. ISOPON ZINC 182 is a highly effective rust inhibiting primer. It can be applied to all ferrous metal surfaces provided the loose rust is removed. Complete removal of all rust will improve its effectiveness. The hardened ISOPON ZINC 182 forms a tough durable surface onto which paint can be applied. Once applied ISOPON ZINC 182 will provide first class rust protection to ferrous surfaces. Also available in 250ml tin,1L tin or 450ml Aerosol.