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 5985-00-371-8020
NSN 6110-01-218-5257
NSN 6110-01-614-0318
NSN 5998-01-072-6370
NSN 5975-01-230-9416
NSN 2925-00-928-5931
NSN 5895-00-098-7634
NSN 5915-00-905-6281
NSN 5910-00-988-6204
NSN 5975-01-523-9152
NSN 5950-01-383-5887
NSN 5996-01-258-5327