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 5945-00-529-0103
NSN 6135-01-180-9611
NSN 5998-01-564-0976
NSN 6645-01-081-6399
NSN 2925-01-411-4666
NSN 6130-01-657-4862
NSN 5945-01-592-3203
NSN 5945-01-207-0825
NSN 5960-01-474-4843
NSN 5990-01-476-0722
NSN 2925-01-387-0870
NSN 6220-01-449-1239