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 6610-01-433-2219
NSN 5999-00-481-3850
NSN 5910-00-824-0188
NSN 6130-01-328-6491
NSN 5935-01-381-0477
NSN 5920-01-300-6055
NSN 5935-00-259-2039
NSN 6620-01-323-6091
NSN 6240-00-577-3440
NSN 6610-00-894-2143
NSN 5920-01-026-9645
NSN 5998-00-541-8792