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 5920-01-227-4623
NSN 5895-00-323-0642
NSN 5930-00-498-5820
NSN 6220-01-269-1835
NSN 5975-01-462-0521
NSN 5996-01-230-0141
NSN 6620-01-094-1246
NSN 6110-01-190-5512
NSN 6645-00-258-8547
NSN 2925-00-428-6349
NSN 5975-01-200-2845
NSN 6645-01-101-2877