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 7035-00-155-9513
NSN 5910-00-675-4503
NSN 6110-01-529-6715
NSN 6150-01-631-2797
NSN 5935-01-250-2528
NSN 5920-01-491-1905
NSN 7035-01-529-2049
NSN 5998-01-274-6612
NSN 5998-01-138-5841
NSN 6645-01-267-1868
NSN 6130-00-928-3405
NSN 6135-01-645-4653