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 6650-01-415-6682
NSN 5998-00-827-0527
NSN 6240-01-535-6101
NSN 5975-01-549-1134
NSN 5998-01-602-8425
NSN 5950-00-503-2802
NSN 6240-00-816-6749
NSN 7035-01-575-1026
NSN 6320-01-512-2031
NSN 5999-01-359-8294
NSN 5998-00-111-2787
NSN 6240-00-402-4481