Moeller Marine Zinc Phosphate Primer Moellers Zinc Phosphate Primers are quality-tested to meet the needs of the marine environment. This outboard and stern drive self-etching, phosphate primer chemically bonds with aluminum and steel to form a corrosion-resistant base coat. It exceeds 800 hours of the 5 salt spray corrosion test, and is ideal for spot repair of damaged coatings. Best of all, Moellers zinc phosphate primer performs as well as the zinc chromate of old, and makes an excellentand s