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 6130-01-551-1185
NSN 5835-01-259-0859
NSN 5975-01-298-5620
NSN 5895-00-370-3418
NSN 5910-00-213-6457
NSN 5950-01-224-7057
NSN 5950-01-547-5207
NSN 5996-01-445-8522
NSN 5998-00-107-6012
NSN 6135-00-809-2148
NSN 5915-00-430-5104
NSN 5985-00-189-0599