Industrial Choice 1600 system galvanizing compound spray contains 93% pure zinc coating and provides maximum corrosion resistance and excellent adhesion and durability on galvanized metal. Dries fast, 20 minutes to the touch. Withstands heat to 200°F. Use to touch-up or repair galvanized ducts, storage tanks, fences, gutters, etc. Performance offset to Federal Specifications DOD-P-21035A, MIL-P-26915C. Meets USDA requirements for incidental food contact.