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 5855-01-357-7907
NSN 5990-00-787-7758
NSN 6685-01-307-3325
NSN 5998-01-510-2055
NSN 6220-01-359-4857
NSN 5910-00-442-3165
NSN 6150-00-707-8804
NSN 6110-01-442-2735
NSN 6135-01-559-1578
NSN 5996-01-576-4148
NSN 6110-01-303-8236
NSN 6685-01-131-4694