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 4140-01-060-2960
NSN 5960-01-294-2397
NSN 6105-01-342-2506
NSN 6110-00-686-1530
NSN 5920-01-165-6881
NSN 6150-01-212-2035
NSN 6645-00-071-2200
NSN 5960-01-563-4797
NSN 6110-01-408-5621
NSN 5910-01-241-9301
NSN 5835-01-049-5290
NSN 6645-00-641-3202