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 2925-01-190-9352
NSN 6650-01-144-5351
NSN 4140-01-534-8910
NSN 5895-01-038-6867
NSN 5910-01-313-6457
NSN 2925-01-474-3363
NSN 5855-01-550-5219
NSN 5960-01-430-3911
NSN 6320-00-456-0836
NSN 6685-01-634-0611
NSN 6320-01-600-5808
NSN 6105-00-068-0436