>> Search results for: 9987966ITEM55 NSN Search Results National Stock Number (NSN) Description 2825-01-223-7786, 2825012237786 RING,PISTON 2990-01-222-4528 , 2990012224528 RING,TRANSDUCER SUPPORT 1 Related Inventory Search You can use this search box to continue searching. Search parameters can include any combination of characteristics, specifications, description, partial part numbers, NSN or other stocking number. Special characters are not needed and are automatically stripped before searching. Do you sell this part? Become part of our growing pool of certified suppliers. Send Information