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 5975-01-616-2236
NSN 6145-01-571-0921
NSN 5985-01-583-8249
NSN 6145-01-303-9032
NSN 5930-01-109-8477
NSN 5950-01-036-7075
NSN 5996-01-287-8311
NSN 5910-01-368-1104
NSN 6645-01-045-4088
NSN 5975-01-090-0802
NSN 5985-00-699-2520
NSN 4140-00-257-5215