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 5915-01-632-7216
NSN 5925-01-092-5018
NSN 6220-00-450-2175
NSN 5965-01-023-0245
NSN 6110-01-330-2699
NSN 6145-01-026-7011
NSN 5990-01-386-5561
NSN 5975-01-576-9501
NSN 5945-01-634-0588
NSN 5910-01-560-4230
NSN 5965-01-437-9721
NSN 6130-00-163-1905