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 5930-01-152-2621
NSN 5925-00-383-9707
NSN 6240-01-160-8975
NSN 5960-01-521-0626
NSN 5990-00-803-0490
NSN 2925-00-373-8837
NSN 6650-01-502-6013
NSN 5835-00-494-8419
NSN 5930-00-294-9189
NSN 5965-00-106-3195
NSN 5905-01-384-4407
NSN 6610-00-308-9034