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 6135-01-226-4071
NSN 6320-01-216-1678
NSN 5935-01-384-3249
NSN 5990-00-288-1820
NSN 5920-01-200-6655
NSN 5975-01-231-9549
NSN 5960-01-484-7560
NSN 5960-01-543-0235
NSN 6150-00-975-8548
NSN 5975-01-632-9144
NSN 6145-01-556-0152
NSN 6220-01-481-5536