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 5935-00-721-2307
NSN 5920-00-199-9514
NSN 5925-00-880-3294
NSN 5965-01-005-0341
NSN 5985-00-339-2318
NSN 5965-01-442-0490
NSN 5855-01-100-3272
NSN 6685-00-693-5009
NSN 6650-01-423-6313
NSN 6145-01-192-8973
NSN 6620-01-069-0912
NSN 5996-01-191-8758