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 6650-00-138-3079
NSN 5945-01-141-6697
NSN 6685-00-944-0094
NSN 5985-00-246-3875
NSN 5998-00-550-1870
NSN 5965-01-241-9865
NSN 7035-01-423-8343
NSN 5925-01-012-1890
NSN 6240-01-209-5321
NSN 5930-01-010-2947
NSN 5965-00-096-7370
NSN 5999-01-277-4540