We offer multiple sealing systems to the Type II anodic coating. Standard process for clear is a DI water seal. We also offer dichromate, nickel acetate, and duplex sealing, which is a combination of dichromate and nickel acetate seal or nickel acetate and boiling water.
Dichromate seal offers excellent improvement to the anti-corrosion capabilities of the anodize while nickel acetate improves the lightfastness of dyed Class 2, giving superior resistance to fading of the colors under exposure to ultraviolet light.