Sprayon® WL740 Zinc-Rich Galvanizing Compound Aerosol is a high performance primer containing pure zinc dust pigment blended with epoxy resin. Stops rust on steel or galvanized coatings. The self-sacrificing zinc protects the base metal, preserving strength & prevents rust creepage when the area is penetrated or scratched (equal to or better than hot dipped galvanizing). Meets Mil-P-26915D.