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 5996-01-080-0301
NSN 6240-00-289-7059
NSN 5925-01-195-2985
NSN 5835-01-442-6482
NSN 5915-00-632-4534
NSN 6150-00-974-4784
NSN 5920-01-412-0629
NSN 5920-01-390-8273
NSN 6150-00-866-2832
NSN 6610-01-336-0484
NSN 5998-01-196-6131
NSN 6645-00-315-9254