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 6620-00-774-3638
NSN 5996-01-064-4868
NSN 5905-00-115-9933
NSN 5925-00-389-6433
NSN 2925-01-337-9783
NSN 5998-01-082-4163
NSN 5950-00-462-9866
NSN 6110-01-514-6874
NSN 5945-00-011-8266
NSN 6650-01-646-1643
NSN 5905-01-506-9949
NSN 2925-01-426-3410