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 5905-00-338-3641
NSN 6110-01-259-4402
NSN 2925-00-288-1394
NSN 6135-00-145-8884
NSN 4140-01-643-7599
NSN 5996-01-324-1827
NSN 5855-01-147-6024
NSN 5975-00-529-3835
NSN 5925-01-155-7697
NSN 6145-01-433-2329
NSN 4140-01-381-3221
NSN 5985-01-401-5387