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 5960-00-256-1203
NSN 5920-01-508-5782
NSN 6145-00-528-6467
NSN 5996-00-932-1383
NSN 5996-01-346-1099
NSN 5905-01-045-2373
NSN 5910-00-044-4016
NSN 5935-00-151-4910
NSN 6645-00-679-8203
NSN 5998-01-633-9650
NSN 5975-01-521-3903
NSN 6645-00-580-2652