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 6620-00-139-1064
NSN 6105-00-708-9680
NSN 5895-01-378-6994
NSN 4140-00-703-0738
NSN 6645-00-514-3523
NSN 5920-00-624-3049
NSN 7035-01-266-3490
NSN 6645-01-023-2180
NSN 5945-01-442-5669
NSN 7035-01-211-5636
NSN 5855-01-557-6277
NSN 6110-01-374-0836