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 4140-00-523-0410
NSN 6135-01-370-2599
NSN 5950-01-367-8142
NSN 5835-01-432-1277
NSN 5965-00-845-6325
NSN 6145-00-882-2500
NSN 5985-01-361-8982
NSN 5895-00-020-3398
NSN 5910-00-422-5333
NSN 5975-01-522-2384
NSN 6620-00-199-8734
NSN 6150-00-819-0026