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 5998-01-359-2713
NSN 5999-00-001-5985
NSN 6135-00-405-1989
NSN 6105-01-513-7070
NSN 5895-00-156-4939
NSN 5996-00-553-7348
NSN 4140-01-608-7877
NSN 6610-00-894-2143
NSN 4140-00-219-3146
NSN 5985-01-347-4690
NSN 5999-01-356-1430
NSN 6685-00-454-7530