... the corrosion protection of self-seal system. VCI powder,SF/D-331 is watersoluble, spayable volatile corrosion inhibiting powder ... structure and pipes) and metals in the enclosed space. SF/D-331 provides excellent volatility, migratory and absorbable performances, and ... storagel Cavities, aperture, holes, casting body Method of applicationapply SF/-331 in dry form by spraying easily achieved to pipe ...