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 5990-01-340-3575
NSN 5950-01-366-0830
NSN 2925-00-650-5611
NSN 5910-01-028-1706
NSN 6240-00-006-3725
NSN 5965-00-106-3195
NSN 5920-00-469-2648
NSN 5945-01-513-7759
NSN 5998-01-472-1965
NSN 6240-01-242-9138
NSN 5930-01-230-6572
NSN 5835-01-497-5029