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 6110-00-997-6581
NSN 5998-01-023-0226
NSN 5999-00-503-9935
NSN 5999-01-126-5433
NSN 6150-01-207-1411
NSN 5999-00-250-9255
NSN 5960-00-241-2911
NSN 6610-00-473-0548
NSN 5920-01-329-4571
NSN 5950-00-786-8284
NSN 6610-01-369-7306
NSN 6110-00-474-2592