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 6220-01-370-9438
NSN 5965-00-529-0602
NSN 5950-01-055-5650
NSN 2925-00-899-4261
NSN 6220-01-060-1096
NSN 6645-01-476-8013
NSN 6685-01-279-1994
NSN 5895-01-147-5688
NSN 5975-01-288-3013
NSN 5999-00-439-0874
NSN 5855-00-610-4052
NSN 5990-01-357-6175