PTW-582 Water Reducible Epoxy Primer is chemical and solvent resistant. It is a TUF/FILM epoxy primer that conforms to MIL-PRF -85582D. BMS 10-11Y TY I, CL A, GR E It is especially recommended to inhibit corrosion of aluminum and other plated or unplated metallic surfaces. PTI’s Water Reducible Epoxy Primer is recommended for all PTI topcoats to provide maximum adhesion and corrosion protection.