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 6320-01-506-9439
NSN 6105-01-560-7401
NSN 6220-01-384-2253
NSN 5925-01-583-7063
NSN 5935-01-370-4330
NSN 2925-01-448-2880
NSN 5935-00-901-7029
NSN 6320-01-215-2284
NSN 6610-01-227-7221
NSN 5910-01-542-8781
NSN 6650-01-175-0841
NSN 6145-00-793-7816