This specification covers the engineering requirements for producing an anodic coating on aluminum and aluminum alloys which are subsequently sealed with an organic resin.

This coating has been used typically to increase corrosion resistance and provide surfaces which will ensure adhesion of subsequent organic finishes, but usage is not limited to such applications. This process is applicable to all forms and alloys of aluminum. Coatings produced through resin-seal anodizing cannot be subsequently dyed. This process is not suitable for parts which contain joints or recesses in which the solutions utilized in the anodizing process may be retained.