2K Epoxy Primer Activator, 1-Quart 2K Epoxy Primer Sealer/Groundcoat is an exceptional lead and chromate free corrosion-resistant coating with excellent adhesion on a variety of properly prepared surfaces. 2K Epoxy Primer Sealer/Groundcoat improves adhesion of body fillers and resists moisture damage caused by water permeation. If further reduced, this product may be used as a precoat or sealer/groundcoat prior to topcoating. Product Type: Hardner. Activator/Hardner used: 6144.