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 6645-01-400-2119
NSN 5999-01-568-2440
NSN 5930-00-823-7797
NSN 5925-00-504-0996
NSN 6320-00-701-0437
NSN 5999-01-418-9799
NSN 6220-01-139-7340
NSN 5950-00-495-2539
NSN 6150-01-434-8512
NSN 6105-01-453-4633
NSN 6220-01-047-7325
NSN 5910-01-601-3860