4320-00-765-9835 (FSP6580XF5010151(316))
4320-00-765-9835 is equivalent to manufacture part number E663-8. It is a spring loade shaft seal assembly and is classified under Federal Supply Class 4320 (4320 - Power and Hand Pumps), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 4320 - Power and Hand Pumps and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.