Metal Guard 520 is the culmination of several months of intense research to develop a “dry-to-touch” water displacing thin film rust preventive that when applied as the final sealant to black oxide coatings will result in exceptional corrosion resistance in the range of 100-150 hours per ASTM B-117 specifications. Metal Guard 520 can be applied to aluminum, steel, stainless steel or copper alloy substrates by spray, immersion, brushing or flood coating.
