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 5855-01-442-9490
NSN 6645-01-091-0009
NSN 5910-01-633-9963
NSN 6110-01-344-5852
NSN 5855-01-100-3272
NSN 5990-00-876-0576
NSN 5945-01-109-4206
NSN 5998-00-278-4481
NSN 5950-01-071-7283
NSN 6645-01-239-8133
NSN 5930-01-022-9103
NSN 5895-00-542-2019