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 5960-01-056-4982
NSN 6150-00-278-7070
NSN 6650-01-323-2141
NSN 5895-01-133-6600
NSN 2925-01-100-3694
NSN 2925-01-495-2690
NSN 6320-00-857-4073
NSN 5915-01-008-8580
NSN 5935-01-603-4399
NSN 5999-01-605-1024
NSN 6645-00-155-2398
NSN 5855-01-470-2755