Tanks on the anodize line.

Anodize Sealing

Sealing increases the resistance of the anodic coating to staining, increases the resistance to corrosion, and improves the durability of colors produced.

Usually, dyed coatings are sealed in Nickel Acetate seal due to its ability to reduce color leaching during the sealing process when compared to Hot DI seal baths.

Hot DI Water seal is often used for non-dyed Type III coatings in applications for which low particle contamination is important.

Any type of sealing will reduce the abrasion resistance properties of anodize coatings. So in the case of colored Type III coatings, a procurement decision must be made as to the primary function: abrasion resistance or color longevity.