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 5925-00-500-7026
NSN 5920-00-725-6710
NSN 5945-01-426-1064
NSN 7035-01-179-5667
NSN 5985-00-959-3318
NSN 6320-00-593-0379
NSN 6110-00-232-5406
NSN 6220-01-056-5169
NSN 5975-01-605-3685
NSN 5895-00-246-4415
NSN 4140-01-597-2929
NSN 7035-00-511-8617