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 5965-01-633-8849
NSN 6240-01-245-4708
NSN 5835-01-416-6455
NSN 2925-01-444-6676
NSN 6650-01-050-8680
NSN 5950-00-518-1674
NSN 6650-01-647-7656
NSN 5990-01-034-0516
NSN 5925-01-113-6827
NSN 5920-00-399-7760
NSN 4140-00-629-5574
NSN 5925-01-418-4541