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 6105-01-296-0886
NSN 5920-01-371-2869
NSN 6145-01-129-7009
NSN 5990-00-014-2310
NSN 6650-01-386-6711
NSN 5925-00-589-8989
NSN 6220-01-199-2512
NSN 2925-01-463-0594
NSN 5910-01-631-5443
NSN 2925-01-485-8304
NSN 5905-01-375-0253
NSN 6135-01-222-0703