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 6150-01-340-3573
NSN 5960-01-423-4240
NSN 6135-01-190-2628
NSN 6110-01-060-9514
NSN 6145-01-157-2046
NSN 5935-00-109-2952
NSN 6220-01-626-3162
NSN 6135-01-285-1925
NSN 5990-00-455-9865
NSN 5920-01-173-2598
NSN 5965-01-600-5604
NSN 6620-01-294-1044