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 6620-01-065-8265
NSN 4140-01-310-5045
NSN 5975-01-393-7463
NSN 5998-01-122-8301
NSN 6620-00-483-1961
NSN 6130-01-457-1352
NSN 5985-01-588-8267
NSN 5985-00-277-7371
NSN 5930-00-386-5963
NSN 5990-01-433-7886
NSN 6220-01-523-9388
NSN 5945-01-428-4033