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 6220-01-561-1871
NSN 6620-01-365-1499
NSN 5910-01-487-8330
NSN 6320-01-457-2805
NSN 5855-00-688-9954
NSN 5996-00-525-1777
NSN 5945-00-664-6668
NSN 5925-01-310-4821
NSN 5835-00-034-4976
NSN 6650-01-238-9717
NSN 6130-01-056-4204
NSN 6240-00-948-6652