www.praymax.com/en-us/products/product/primer-primer-filler/2k-epoxy-primer-1

Universal 2K epoxy primer filler for all problematic surfaces; for example, metal, non-ferrous metal, galvanized sheet steel, or anodized aluminum.

Advantages
Excellent adhesion and corrosion protection properties, even critical surfaces such as aluminium
Very smooth flow
Outstanding insulating & sealing properties
Recoatable with all standard solvent-/ water borne basecoats or single stage topcoats
For cleaned and sanded surfaces