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 6240-01-399-8231
NSN 5990-01-632-0969
NSN 5950-00-305-4783
NSN 5960-01-605-9921
NSN 5925-01-272-0894
NSN 5975-00-659-6531
NSN 5945-01-336-3670
NSN 5945-00-336-9360
NSN 5999-01-643-3593
NSN 5905-01-046-2692
NSN 6320-00-681-1324
NSN 5999-01-095-4517