Aluminum primer. The tech really stressed coating the bare metal as quickly as possible, the more oxidation, the weaker the adhesion. May 27, 2017 · We are sandblasting aluminum deer bling towers (slayer outdoor products). We get it from Sherwin Williams industrial coatings. Zinc chromate protects the aluminum because the zinc will act as a sacrificial metal and corrode in favor of the aluminum. Nov 21, 2002 · where the aluminum gets messed with, rivets or helicoils, (or on rare occasion a bolt that goes directly into the aluminum) goes in wet with the zinc chromate primer. We are experimenting with other methods. The zinc sacrifices instead of the aluminum. I used a BCC Blehm urethane elastomer. Damage the coating and let moisture in and it'll peel off surprisingly quickly. Click to expand Jun 15, 2002 · Second question - can anyone recommend a clear coat product like a clear lacquer for aluminum.