Alexseal® Cor Spec Primer 135 Converter, Quart. Cor Spec is a chromate containing, two component epoxy primer for use on metal substrates. This product is highly resistant to corrosion and chemicals. Cor Spec Primer 135 is designed to prime and seal old and new, properlyprepared, metal surfaces prior to the application of Alexseal® Topcoats or Alexseal® Finish and Surfacing Primers. This product is ideal for masts, parts and metal substrates. It may be top coated directly or primed depending on the application requirements. Cor SpecPrimer 135 may be used above and below the waterline.