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 2925-01-620-9673
NSN 5895-01-629-7777
NSN 6110-00-111-7889
NSN 5855-00-951-6483
NSN 6320-01-125-3361
NSN 5920-00-203-5938
NSN 6110-00-521-8932
NSN 6650-01-477-0073
NSN 5895-00-932-5491
NSN 5950-01-510-9445
NSN 6110-01-376-5921
NSN 5855-01-632-8597