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 6110-01-543-8239
NSN 6130-01-146-4590
NSN 5855-01-411-0189
NSN 5965-00-553-6898
NSN 6610-00-278-7647
NSN 5895-01-652-1388
NSN 5975-01-175-6099
NSN 6105-00-995-4636
NSN 6645-00-848-8490
NSN 5915-01-102-1601
NSN 6240-00-275-1950
NSN 5960-01-081-7745