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 6650-00-131-7284
NSN 6135-01-010-0891
NSN 6150-01-212-7110
NSN 6320-01-046-5228
NSN 5945-01-026-3947
NSN 5950-01-408-9344
NSN 5935-00-175-0356
NSN 6145-01-243-2681
NSN 6220-00-702-0002
NSN 5935-01-474-3603
NSN 6145-01-461-5328
NSN 7035-00-890-7649