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 6645-01-134-8137
NSN 5905-00-244-8513
NSN 5835-00-764-4388
NSN 6105-01-624-0679
NSN 6110-01-381-6576
NSN 5975-01-550-4837
NSN 7035-01-629-6645
NSN 5965-01-210-7784
NSN 6320-01-277-5793
NSN 5915-00-484-5292
NSN 5945-00-967-9365
NSN 5905-00-052-3528