5 grams MCG111 Christo-Lube High Performance PFPE Based Lubricant Oxygen Compatible Grease Meets the specification requirements and has been qualified under Military Specification MIL-PRF-27617F Types I, II and III Has been adopted as the preferred oxygen compatible or enriched air (Nitrox) lubricant by most breathing apparatus equipment manufacturers. Is recommended for use on static or dynamic seals in either open or closed circuit diving system