Heavy Zinc Primer This is a heavy duty OEM zinc primer that contains the highest amount of zinc on the market. This is a good primer for epoxies, as well as other powders. Great for chemical resistance and high impact durability. Adding a priming step to your process can help defeat problems with adhesion, poor surface quality, uneven surfaces, and orange peel. Not for use on aluminum. APPLICATION NOTE: Be sure that you only do a PARTIAL CURE on this primer before applying your top coat...