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 5945-01-018-7761
NSN 5999-01-014-0872
NSN 5930-00-407-3126
NSN 6220-00-763-4131
NSN 5945-01-601-8671
NSN 5998-00-277-7552
NSN 5975-00-676-9557
NSN 5999-01-025-9717
NSN 5996-00-732-2552
NSN 5935-00-925-3739
NSN 5985-01-144-4525
NSN 5925-01-372-4734