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 5920-00-081-0537
NSN 5930-01-120-3690
NSN 5855-01-287-1515
NSN 6650-01-138-1712
NSN 6610-01-229-3679
NSN 5925-00-431-3256
NSN 6685-01-018-6768
NSN 6105-00-482-4584
NSN 5835-01-469-6706
NSN 6240-00-260-0399
NSN 6645-01-116-9634
NSN 5996-01-347-5725