Daubert Cromwell‘s Nox-Rust 5400 VCI oil, known as an effective corrosion inhibitor for metal parts, has shown to be a safe weldable coating that protects metal surfaces without affecting weld quality. Corrosion protection on welded metals lasts for up to five years, indoors. The light oil leaves a lubricating, corrosion preventive film that does not interfere with the welding process. Recent tests showed plates protected with the oil could be welded together without having to remove the protective coating with solvents or cleaning solution. The welding process and the weld itself were unaffected.