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 5925-01-507-6104
NSN 6130-01-399-0126
NSN 5998-00-446-2169
NSN 6620-00-709-7389
NSN 5920-01-471-5364
NSN 5996-01-441-7910
NSN 2925-00-596-9775
NSN 5999-00-226-7859
NSN 6620-01-068-4498
NSN 6135-01-100-3593
NSN 5855-01-261-5495
NSN 5945-00-375-5840