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 6645-01-566-3205
NSN 5998-01-088-1427
NSN 5960-01-426-4242
NSN 6650-00-063-4484
NSN 5930-00-715-6307
NSN 6650-00-175-7520
NSN 6320-01-438-6280
NSN 5905-01-167-8648
NSN 5990-00-118-8953
NSN 5905-00-727-5740
NSN 5985-00-068-3782
NSN 6220-01-163-4901