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 6240-01-238-5374
NSN 5895-01-234-3552
NSN 5998-01-641-9923
NSN 6320-00-857-4073
NSN 5920-01-287-7541
NSN 5985-00-086-7651
NSN 5905-01-031-3302
NSN 5999-01-018-4632
NSN 5855-01-419-5285
NSN 2925-00-351-1015
NSN 5920-01-602-7036
NSN 6620-01-192-3083