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 5925-01-609-0631
NSN 6145-01-562-8763
NSN 5895-01-087-8978
NSN 5915-01-437-1519
NSN 5965-00-177-2932
NSN 5910-01-149-7372
NSN 6130-00-171-7400
NSN 6105-00-350-4915
NSN 6685-01-529-2845
NSN 6620-01-417-3314
NSN 7035-00-238-3662
NSN 6110-01-379-0248