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 6150-01-045-4620
NSN 5855-01-324-3756
NSN 6610-01-509-2048
NSN 5965-01-241-0553
NSN 6130-00-256-7934
NSN 5915-01-657-6931
NSN 5965-01-296-8991
NSN 6650-01-556-9696
NSN 6240-00-227-0135
NSN 5895-00-661-1773
NSN 5895-01-055-7564
NSN 2925-01-236-3547