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 6685-01-316-6505
NSN 5965-01-356-6340
NSN 5905-00-737-3528
NSN 6130-01-200-5683
NSN 5920-01-341-3941
NSN 5855-01-172-4568
NSN 5835-01-229-6964
NSN 6130-00-225-1753
NSN 5985-01-248-9253
NSN 5935-01-453-4037
NSN 5990-00-963-1799
NSN 6135-01-353-3802