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 5930-01-441-8754
NSN 6130-00-166-1332
NSN 5985-01-103-8190
NSN 5835-01-540-4995
NSN 6220-01-201-0573
NSN 6650-00-273-8732
NSN 5999-00-410-0358
NSN 6650-01-145-9570
NSN 5945-01-425-7800
NSN 5915-01-123-8292
NSN 6110-01-347-3599
NSN 5998-00-413-5040