Bar-Rust 235 is a high performance, multi-purpose, surface tolerant, two-component chemically-cured epoxy semi-gloss coating. For use on properly prepared steel or masonry surfaces including immersion (non-potable water) service. Ideal for structural steel, piping, storage tank exteriors, machinery, and equipment in petroleum refineries, pulp and paper mills, chemical and fertiliser plants, and sewage treatment plants. Performance alternate for Federal Specifications TT-C-550 and TT-C-545. Meets AWWA D102. Priced as a 1 gl kit Some colors slightly higher.