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 5965-01-078-1312
NSN 7035-01-144-1868
NSN 6645-01-364-0867
NSN 5905-01-338-3468
NSN 4140-01-384-2351
NSN 5910-01-254-3758
NSN 2925-01-231-6312
NSN 5996-01-592-1802
NSN 5990-01-514-8030
NSN 6150-01-578-6283
NSN 5990-00-274-3225
NSN 5905-01-383-8392