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 5990-00-826-3846
NSN 6685-00-633-6917
NSN 6220-00-871-6154
NSN 5975-01-548-0886
NSN 2925-01-100-3694
NSN 5835-01-509-8992
NSN 5975-01-157-8140
NSN 4140-01-447-2419
NSN 5998-01-398-1852
NSN 6145-01-193-0273
NSN 5985-01-157-7892
NSN 5835-01-587-8787