Profile: SevenPH Interchem specializes in providing specialty chemicals. Ideal primer for industrial and infrastructure equipment, heavy machines. Recommended for steel structures in chemicals, fertilizers, petrochemicals and industrial paints. Epoxy primer is a sealer that produces a good surface finish on applied topcoats. A two-part epoxy primer contains zinc phosphate, which acts as corrosion-inhibiting pigment. Epoxy primers can be used to waterproof materials that consequently protect the bare metal from oxidation. A dry, very clean surface is needed before applying epoxy primer. Two-part epoxy primer needs to be mixed thoroughly before applying.