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 5975-01-464-4293
NSN 6645-01-408-6568
NSN 4140-01-265-3736
NSN 6685-01-168-7990
NSN 5930-00-881-7121
NSN 5905-01-265-0307
NSN 5998-01-485-0702
NSN 5895-01-602-9926
NSN 5935-01-024-1073
NSN 4140-00-055-4373
NSN 6220-00-293-5368
NSN 5996-01-257-2517