HydroKlad Si is a clear, inorganic seal for use on electroplated, mechanically plated and galvanised zinc and zinc alloys.
It is an alkaline post dip solution that is chromium-free on initial make-up. It does not contain polymers, which results in reduced droplets compared to conventional organic based sealers. Applied by immersion, it produces a corrosion resistant film particularly when applied over hexavalent or trivalent chromium treated zinc and zinc alloy deposits.
When used as a post dip for galvanised steel surfaces, the thin colorless film increases corrosion resistance and preserves the initial bright appearance of the galvanised surface. Easy to operate and control, it is highly suited to rack and barrel applications and does not require water rinsing before oven drying.
HydroKlad SC 40 is a water-based air drying lacquer designed to provide excellent corrosion protection on rack plated zinc and zinc alloy coatings. On Make-up the solution is free from any chromium compounds. HydroKlad SC 40 coatings improve the gloss level of the passivated coating. In application the coating is designed to minimalize the “last drop” phenomena, giving an even and uniform finish. HydroKlad SC 40 can be removed from racks in a conventional hot alkaline soak cleaner and is partticularly suitable for rack application.