HARD HAT® GALVA ZINC - Cathodic protection of bare and galvanized steel - 90% pure zinc in dry paint film - Resistant to 500 hours salt spray test (DIN 50021 SS) - Can be painted over within one hour, brush version within 4 hours - Can be overpainted with HARD HAT® metallic topcoats Hard Hat® Aerosol Cold Galvanizer 2185 is a fast-drying, zinc-rich base coat based on an epoxy ester. This product contains pure zinc and provides cathodic protection.