The PlastiKote Industrial Metal Primer Sprays increase the life and durability of metal surfaces. They seal out moisture and inhibit rust formation. Metal Primers protect and seal all bare surfaces without the need for sanding. Quick drying. Drying time: touch dry in 20-40 minutes, thoroughly dry in 2 - 4 hours.Coverage: approximately 2.23m².PlastiKote 756 is a Zinc Rich Primer that fuses to the metal surface inhibiting corrosion through a unique electro-galvanic process; making it ideal for areas exposed to severely corrosive elements. Pack size: 400ml.