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 5998-01-514-2816
NSN 6130-01-487-0227
NSN 5998-00-917-1925
NSN 6610-01-130-2829
NSN 5999-00-385-1722
NSN 5925-01-227-6859
NSN 6105-00-244-1729
NSN 6145-01-053-8018
NSN 5999-01-606-1651
NSN 5855-00-997-6225
NSN 5990-01-655-1437
NSN 5990-00-170-4239