LOCTITE SF 7800- Corrosion Protection LOCTITE® SF 7800 is a solvent-based, zinc and aluminum resin Solvent-based, zinc and aluminum resin spray that provide spray which provides excellent cathodic corrosion protective long term cathodic corrosion protection on galvanized parts. coating at room temperature on ferrous metals. Typical applications include touching up metal parts after welding, providing long-term protection of metal assemblies and to restoring protection to repaired galvanized parts such as crash barriers, tubes, flanges, tanks and panels. Its operating range is -50 to +550°C.