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 6110-00-056-8133
NSN 6130-00-032-4859
NSN 4140-00-007-2627
NSN 6130-00-081-2186
NSN 6240-01-444-3508
NSN 5975-01-380-9477
NSN 5835-00-647-2104
NSN 5990-00-929-8923
NSN 5925-00-269-2685
NSN 5910-00-628-8725
NSN 5985-01-375-1940
NSN 6645-00-947-0625