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 5915-00-624-7110
NSN 6135-01-017-3001
NSN 4140-01-485-0439
NSN 5910-00-036-7278
NSN 5999-00-203-5573
NSN 5996-01-024-8898
NSN 5855-01-144-0423
NSN 6110-00-175-3661
NSN 6610-00-236-7175
NSN 5935-00-769-7776
NSN 6110-01-641-0015
NSN 5985-00-170-6768