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 5975-01-305-1609
NSN 5990-01-651-6364
NSN 6685-00-451-5262
NSN 5996-01-629-8574
NSN 5920-00-499-2458
NSN 6620-00-197-5130
NSN 6220-01-367-2923
NSN 6145-01-371-2916
NSN 2925-01-183-2897
NSN 5915-00-636-9785
NSN 5905-01-552-1836
NSN 5965-00-013-1278