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 5985-01-464-3153
NSN 6645-01-254-7980
NSN 5915-01-032-4475
NSN 6610-01-644-2546
NSN 6320-00-149-7570
NSN 6240-01-200-1663
NSN 6320-00-228-5678
NSN 5895-00-216-5849
NSN 6220-00-353-5730
NSN 6240-01-121-8116
NSN 6150-01-373-4531
NSN 5905-01-562-3224