4310-00-131-2997 (CA68S4700-5PC28)
4310-00-131-2997 is equivalent to manufacture part number BS5-1727PC28. It is a piston ring and is classified under Federal Supply Class 4310 (4310 - Compressors and Vacuum Pumps), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 4310 - Compressors and Vacuum Pumps and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.