What Is Zinc Rich Primer? Zinc rich primer is a protective coating formulated with a high concentration of metallic zinc dust combined with epoxy, polyurethane, or inorganic binders. It is applied directly to properly prepared steel surfaces before intermediate and topcoat applications. Unlike conventional primers that simply create a barrier against moisture, zinc rich primers prov... https://docs.google.com/document/d/1rQPEPywLnHHxT8NfNJqVDDCsjW1UHrMrItJXD_C8-5c/edit?tab=t.q09k4apmnnv1