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 5930-00-833-9808
NSN 5910-00-081-0275
NSN 5999-01-469-6750
NSN 5835-01-579-5941
NSN 5925-01-070-9651
NSN 5895-00-522-5496
NSN 5990-00-402-7721
NSN 6145-01-329-2367
NSN 6320-00-905-0543
NSN 6130-01-604-5739
NSN 6135-01-265-1384
NSN 5996-01-399-6677