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 6110-01-106-2708
NSN 5910-00-461-5369
NSN 6610-01-085-2072
NSN 5990-01-069-0365
NSN 6220-01-492-4825
NSN 6130-01-021-8281
NSN 6150-01-374-9003
NSN 5985-01-646-1855
NSN 6135-01-657-0554
NSN 5985-01-100-0809
NSN 5915-01-444-4069
NSN 5855-00-138-2386