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 5920-01-534-7042
NSN 5835-00-888-9422
NSN 5905-01-200-7081
NSN 5975-00-240-5001
NSN 5930-00-236-6756
NSN 5985-00-480-6235
NSN 6650-01-351-4544
NSN 6110-01-027-7965
NSN 5930-01-648-1980
NSN 6130-01-563-3980
NSN 6610-01-370-3886
NSN 5998-00-005-2416