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 5895-01-204-7658
NSN 5855-01-450-2333
NSN 6110-01-554-9483
NSN 6145-01-529-2713
NSN 6110-01-064-7528
NSN 5975-01-440-7495
NSN 6150-00-352-6606
NSN 6320-01-530-4870
NSN 5996-00-507-1629
NSN 6645-01-566-3205
NSN 6135-00-485-7402
NSN 5920-01-421-0291