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 5905-00-187-0428
NSN 4140-00-917-4308
NSN 5835-00-705-4848
NSN 6650-00-840-9758
NSN 6650-01-434-0331
NSN 5999-01-095-0446
NSN 5930-01-502-6910
NSN 5965-01-547-4779
NSN 5920-01-529-4724
NSN 5915-01-091-0936
NSN 6110-01-548-8417
NSN 6135-01-277-3345