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 6685-01-546-6967
NSN 4140-01-304-2950
NSN 6145-00-058-2436
NSN 5975-01-369-2294
NSN 5935-01-287-9334
NSN 5905-01-194-2282
NSN 2925-01-539-9795
NSN 5835-00-789-1454
NSN 6240-00-201-9011
NSN 6220-01-429-1294
NSN 5920-01-519-2399
NSN 6110-01-508-6563