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 4140-01-641-4067
NSN 6645-01-086-7668
NSN 5945-00-060-3842
NSN 5996-01-371-2958
NSN 5999-01-423-0729
NSN 6150-01-323-9137
NSN 5998-01-464-4596
NSN 2925-01-065-0060
NSN 5985-01-617-3709
NSN 5950-01-141-7635
NSN 5990-01-543-6301
NSN 6130-00-500-8477