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 5965-01-453-7504
NSN 6645-01-411-5657
NSN 5910-00-292-0048
NSN 6135-01-529-0122
NSN 5910-00-660-5006
NSN 5975-01-644-5518
NSN 7035-00-177-1557
NSN 6240-01-257-9004
NSN 5985-00-888-5536
NSN 5975-01-211-6594
NSN 5990-01-430-9177
NSN 2925-01-224-1885