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 5930-00-099-2103
NSN 6320-01-592-6248
NSN 5915-01-530-6333
NSN 5999-00-848-2270
NSN 5930-00-547-8020
NSN 5965-00-378-3403
NSN 5855-00-292-5086
NSN 6320-00-405-2348
NSN 5930-01-109-0268
NSN 5985-01-249-8051
NSN 5920-00-915-3571
NSN 5935-01-487-6660