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 6240-01-013-6052
NSN 5910-01-049-2189
NSN 6105-01-585-2502
NSN 6130-01-554-3629
NSN 5920-01-113-9040
NSN 6240-01-575-0613
NSN 5960-01-347-0751
NSN 5925-01-361-4275
NSN 5910-00-516-9583
NSN 6320-00-468-8421
NSN 5910-00-897-2083
NSN 4140-01-394-4166