VCI stands for Volatile Corrosion Inhibitor. Papers and films treated with engineered chemicals safely protect metals from corrosion. The chemicals in the VCI products are volatile. When metals are wrapped or packaged in VCI, the chemicals volatize in the packaging environment and create a protective molecular layer on the surface of the metal. This protective layer prevents contaminants such as salt, dirt and oxygen from causing corrosion by depositing on the metal. For added convenience, MilitarySpecPackaging.com offers a full line of military spec VCI available in roll stock.