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 steam turbines
NSN 5990-01-035-6869
NSN 5915-01-165-7409
NSN 6145-00-332-4988
NSN 5996-01-014-8262
NSN 6645-00-780-5260
NSN 6645-00-809-3540
NSN 5999-01-296-1125
NSN 5996-01-464-3919
NSN 6135-01-536-4810
NSN 5998-01-660-7646
NSN 6320-01-513-9166
NSN 6130-00-967-0475