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 4140-01-388-0835
NSN 5996-01-192-7875
NSN 5920-01-189-0115
NSN 5925-00-188-8678
NSN 5920-00-115-2420
NSN 6145-01-360-4335
NSN 5998-01-571-0588
NSN 6110-01-062-0252
NSN 5945-01-540-8082
NSN 6110-01-420-8996
NSN 5985-01-648-5880
NSN 5935-01-533-7265