Item is not csi but has critcal feature such as magnetic particle insp
A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Undercarriages and parts thereof, for use in military aircraft
NSN 6685-01-173-1506
NSN 5925-01-508-3849
NSN 5930-00-901-6270
NSN 4140-01-457-8583
NSN 5935-01-157-6361
NSN 6685-00-388-8821
NSN 6135-01-151-2705
NSN 6650-01-483-4267
NSN 5996-00-315-3497
NSN 5975-01-338-6010
NSN 5925-01-167-5954
NSN 6220-01-216-0678