General Polymers 3477Epoxy Water Emulsion Primer/Sealer  is an economical sealer for concrete that will outperform water-based acrylic or acrylic/urethane sealers (chemical resistance and wear). Its low viscosity allows GP3477 to flow smoothly, making it easy to spread. GP3477 is suitable for applications as a primer on damp concrete, providing excellent adhesion of polyurethane and epoxy topcoats.