A Volatile Corrosion Inhibitor (VCI), also sometimes called Vapour Phase Inhibitor (VPI), is a method of corrosion protection.

- The inhibiting process begins when the protective vapours disseminate in an enclosed space (through vaporisation) where a thin layer is created on the metal surface. The protection remains as long as the product is in the enclosed space.
- Once the content is removed from the package, the VCI layer re-volatilises, leaving a dry and corrosion-free product.
- Nefab works with VCI free from nitrites giving a major environmental advantage.

VCI can be provided in the following forms:

- paper
- PE-foam
- bags
- emitter cups
- cardboard