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 5945-00-961-3137
NSN 5985-01-609-1675
NSN 6150-01-634-0575
NSN 6220-01-087-5115
NSN 5910-00-101-8273
NSN 6650-00-166-0284
NSN 6685-00-580-0158
NSN 5935-00-222-6473
NSN 5950-01-096-8446
NSN 6130-01-259-7115
NSN 5905-01-057-0288
NSN 6135-00-819-8074