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 5920-01-257-3546
NSN 5999-01-500-5371
NSN 5920-01-651-7678
NSN 6220-01-494-9356
NSN 6105-01-343-7615
NSN 6610-01-580-3272
NSN 5990-00-177-2924
NSN 6320-00-194-4252
NSN 6620-00-494-5122
NSN 5945-01-431-2349
NSN 6610-01-436-2163
NSN 5965-00-894-0015