BONDERITE® M-CR 1001 AERO is an ideal choice. When applied, this clear-colored coating agent forms an invisible coat to provide in-depth corrosion-proofing to the brightened aluminum surface and act as a firm barrier against the elements and continued corrosion. In other words, it actively becomes a part of the aluminum surface. It offers the best affordable substrate for both paint adhesion and corrosion resistance and is ideal when you want to retain the silver-white aluminum finish, either unpainted or with a clear finish over the chemical coating.