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 5835-00-484-1529
NSN 5935-01-323-4642
NSN 5930-00-636-8888
NSN 5915-01-155-2217
NSN 5999-01-204-2077
NSN 6650-00-053-4907
NSN 6645-01-547-0300
NSN 5990-01-347-1478
NSN 6650-01-439-4639
NSN 5855-01-258-7557
NSN 6620-01-344-9355
NSN 6130-01-003-4884