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 6145-00-054-2915
NSN 5905-00-243-9269
NSN 5945-01-120-2197
NSN 5925-01-499-7490
NSN 6130-00-810-3795
NSN 5910-00-586-5296
NSN 5895-00-726-4831
NSN 6645-01-335-3299
NSN 5855-00-197-6387
NSN 5996-01-515-6895
NSN 4140-00-888-9836
NSN 5930-00-901-6411