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 5998-01-072-8614
NSN 5915-00-929-7886
NSN 5920-01-243-2312
NSN 5996-01-320-0280
NSN 6645-00-803-6417
NSN 5965-01-424-1096
NSN 5950-01-084-8305
NSN 6685-01-555-7938
NSN 5945-01-517-8759
NSN 5855-01-416-4503
NSN 6145-01-323-6509
NSN 6645-00-134-9358