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 5910-01-186-9681
NSN 5905-00-160-1447
NSN 5905-00-140-6156
NSN 5920-01-438-2670
NSN 6130-00-925-3926
NSN 5855-01-312-5160
NSN 5985-01-067-8838
NSN 5996-01-161-6296
NSN 5965-01-504-1799
NSN 6620-00-524-3596
NSN 5950-01-029-3613
NSN 4140-01-371-1565