Nox-Rust 4101 Petroleum Based Non Staining VCI Corrosion Inhibitor Daubert VCI Nox-Rust 4101 is designed specifically for acid fume inhibition such as in pickling operations and where corrosion protection storage of bare metals in a high humidity environment is required. Excellent edge coat for steel coils. Passes Ford, MIL-C-16173D Grade 3 and Armco Steel M7C39A tests. Package: 5 gallons or 55 gallon drums