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 5920-01-350-1796
NSN 6135-01-589-9467
NSN 5998-00-829-9792
NSN 6685-00-052-1865
NSN 6150-00-987-9654
NSN 6130-01-261-3053
NSN 5999-01-332-1554
NSN 6620-00-824-4609
NSN 5999-01-429-2853
NSN 6620-01-088-1272
NSN 5996-00-081-3175
NSN 5950-01-516-1171