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 6320-01-512-2031
NSN 5930-01-134-3556
NSN 5965-00-351-7460
NSN 6220-01-157-9062
NSN 7035-01-538-2338
NSN 2925-01-014-0118
NSN 5915-01-202-7273
NSN 6240-00-957-5724
NSN 5945-00-413-2659
NSN 5895-00-203-2379
NSN 6130-01-440-6404
NSN 6610-01-570-6070