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 5965-01-510-0343
NSN 5895-01-361-8790
NSN 5855-01-252-5424
NSN 5945-01-026-1231
NSN 5998-01-408-9570
NSN 5835-01-362-8367
NSN 5910-00-123-5727
NSN 5950-01-243-0835
NSN 5935-00-917-0703
NSN 2925-01-196-6187
NSN 6645-00-091-7353
NSN 6150-00-661-0184