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 5960-01-449-5726
NSN 6105-01-421-1493
NSN 6650-00-473-1259
NSN 6220-01-654-9453
NSN 5925-00-842-7299
NSN 5925-01-204-3363
NSN 5910-01-245-2264
NSN 6620-00-155-2608
NSN 6650-01-067-8946
NSN 6110-01-394-6324
NSN 6610-00-981-9408
NSN 6105-01-472-7138