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: Parts for spark-ignition or compression-ignition internal combustion piston engines for use in aircraft except civil
NSN 7035-01-658-1623
NSN 5915-01-491-6280
NSN 6685-01-233-2744
NSN 2925-01-041-8201
NSN 6135-00-840-6451
NSN 5910-00-951-0333
NSN 5835-01-519-3834
NSN 6650-01-411-1581
NSN 6150-01-650-1898
NSN 6320-01-364-1840
NSN 6645-01-458-8379
NSN 5996-01-350-9771