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 6150-00-523-3733
NSN 2925-01-327-3069
NSN 6320-01-072-2073
NSN 5950-01-528-7982
NSN 5998-00-737-1220
NSN 5920-01-356-4122
NSN 5990-00-419-7584
NSN 6685-00-060-6377
NSN 6220-01-467-4144
NSN 5855-00-760-3870
NSN 5950-00-615-9933
NSN 6130-00-972-9113