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 5920-01-408-5881
NSN 6105-00-665-8581
NSN 6650-00-249-4650
NSN 6645-01-113-6712
NSN 6150-01-603-6423
NSN 6620-01-128-9808
NSN 5920-01-506-6289
NSN 6135-00-838-7008
NSN 5990-00-726-0029
NSN 5895-01-073-6291
NSN 5935-00-287-9898
NSN 6145-01-203-9429