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 2925-01-269-3861
NSN 6620-01-658-8133
NSN 5965-01-253-8699
NSN 6620-01-197-7665
NSN 5915-01-613-0795
NSN 5985-01-276-2425
NSN 5905-00-699-1080
NSN 6110-01-378-8801
NSN 6320-00-845-3261
NSN 5965-01-342-2865
NSN 6220-01-485-0333
NSN 6240-00-984-6257