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 2925-01-154-2949
NSN 5998-00-757-3306
NSN 5985-01-630-6902
NSN 5930-01-634-0659
NSN 4140-00-269-5795
NSN 5910-01-367-5460
NSN 6320-00-831-2227
NSN 6240-01-355-3512
NSN 6150-00-159-3662
NSN 6645-01-366-5033
NSN 6645-01-534-5545
NSN 5998-01-207-0088