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 6110-01-419-7612
NSN 5990-01-364-1942
NSN 5910-00-054-6520
NSN 6150-01-074-7365
NSN 5915-01-573-5980
NSN 6620-01-438-8479
NSN 6105-01-652-1394
NSN 5975-01-196-4990
NSN 6135-00-973-5632
NSN 5990-00-125-1375
NSN 5960-00-916-3859
NSN 5999-00-953-1810