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 5960-00-188-8648
NSN 5965-01-185-2026
NSN 6240-01-582-7155
NSN 4140-01-176-5659
NSN 6620-01-446-7290
NSN 6650-00-792-8577
NSN 5945-01-268-6865
NSN 5930-01-610-0242
NSN 5920-01-041-9168
NSN 6320-01-100-7554
NSN 5920-00-246-5992
NSN 6620-00-767-9415