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 6220-01-117-7619
NSN 6610-01-555-8364
NSN 5999-01-260-5256
NSN 5965-01-294-7522
NSN 5895-00-328-9314
NSN 6105-00-076-4028
NSN 5950-01-610-4933
NSN 6650-01-610-5856
NSN 6240-01-316-4657
NSN 5920-01-097-9927
NSN 6110-00-849-0510
NSN 5925-00-556-3601