368 Zero is a metal-free thread compound formulated especially for use on all OCTG connections. It can be used on API 8-round and Buttress connections as well as premium connections. 368 Zero is a proprietary blend of non-metallic ingredients blended in a high quality, corrosion inhibited petroleum based grease. It has been tested according to API Thread Compound Control and Performance tests as outlined in API 5A3/ISO 13678, Page 3, section 4.2.1. 368 Zero is an economical alternative to metallic compounds that contain lead, zinc, or copper, which are considered hazardous according to DOT, IMDG, IATA, and OSHA classifications. 368 Zero is a complete compound which can be used as an intermediate range storage compound, a running compound, and a compound for hydrostatic testing of casing and tubing.