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 6110-01-383-7091
NSN 5945-01-050-4783
NSN 5965-00-246-5612
NSN 5915-00-139-2615
NSN 5920-01-423-0805
NSN 6645-01-076-4655
NSN 5990-01-339-5118
NSN 5975-01-170-2631
NSN 5990-01-225-9820
NSN 5915-00-178-9864
NSN 2925-01-444-2061
NSN 5925-01-059-0275