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 5975-01-161-4069
NSN 5835-01-291-5405
NSN 5935-00-800-3971
NSN 5930-01-489-0538
NSN 5925-01-443-8590
NSN 6145-00-482-9546
NSN 5930-01-461-7894
NSN 5950-00-143-9492
NSN 5985-01-284-5097
NSN 6150-01-157-6319
NSN 6620-01-332-0623
NSN 6650-01-250-1244