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 5990-01-421-3325
NSN 6650-01-317-0015
NSN 6110-00-400-0165
NSN 6240-00-212-4305
NSN 5999-01-290-3925
NSN 4140-01-392-4520
NSN 5905-00-240-4551
NSN 6220-01-447-7841
NSN 5950-01-656-7432
NSN 2925-01-069-5324
NSN 6150-00-880-1115
NSN 5905-01-032-4407