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 6145-01-336-8328
NSN 6110-01-469-5921
NSN 6220-00-815-8194
NSN 5999-01-003-3015
NSN 5950-01-123-9517
NSN 5998-00-269-5444
NSN 5925-00-177-4654
NSN 5925-00-070-5011
NSN 6145-01-623-3763
NSN 6610-01-323-0901
NSN 5925-01-643-2081
NSN 5985-00-203-1200