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 6645-01-449-0785
NSN 6130-00-248-3259
NSN 6685-01-147-4462
NSN 5915-00-484-9487
NSN 5835-00-484-1529
NSN 6110-01-033-5184
NSN 5935-00-459-4530
NSN 5945-00-152-9562
NSN 6650-01-233-3578
NSN 5975-00-006-5248
NSN 6645-01-388-0391
NSN 5915-01-215-1473