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 6220-01-603-0315
NSN 2925-01-472-4144
NSN 5855-00-862-3345
NSN 6320-01-393-7022
NSN 5905-00-576-8617
NSN 6150-00-477-7697
NSN 5905-00-767-3229
NSN 7035-01-520-5310
NSN 5910-00-069-5345
NSN 5930-01-265-1884
NSN 6620-00-082-1525
NSN 6150-01-335-2456