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 5910-00-050-6280
NSN 6130-01-537-1261
NSN 6220-01-298-6836
NSN 7035-01-230-0250
NSN 6220-00-222-5663
NSN 5905-01-317-6684
NSN 6145-00-995-0062
NSN 2925-01-646-9112
NSN 6135-01-100-3593
NSN 5920-00-225-4758
NSN 6145-00-150-5049
NSN 6135-00-050-7189