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 6130-01-314-2034
NSN 5835-01-501-0526
NSN 4140-01-211-7836
NSN 2925-00-261-5800
NSN 5925-01-321-8829
NSN 5855-01-400-1590
NSN 6320-00-242-3300
NSN 5910-01-436-6548
NSN 6105-01-281-6806
NSN 5965-01-357-2317
NSN 6685-00-474-5721
NSN 5999-00-283-2824