RustOleum 1600 System Cold Galvanizing Compound Aerosol, is perfect to touch up galvanized surfaces. This 93% pure zinc coating provides maximum corrosion resistance and excellent adhesion and durability on galvanized metal. For use to touch-up/repair galvanized ducts, storage tanks, etc. in moderate to severe environments. Dries fast-20 minutes to the touch; withstands heat to 200° F. Performance offset to Federal Specifications DOD-P-21035A; MIL-P-26915C. Meets USDA requirements for incidental food contact; accepted for use in federally registered Canadian food facilities; VOC-compliant nationwide. Product comes in a 12 oz aerosol can. 6 cans per case. Made in the USA.