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 5965-01-612-1537
NSN 6110-01-414-3500
NSN 5975-01-588-2803
NSN 6685-01-628-2999
NSN 5965-01-088-5414
NSN 5905-00-179-9596
NSN 5965-00-651-7372
NSN 6620-01-557-6512
NSN 6610-01-506-7887
NSN 5930-01-467-2662
NSN 6685-00-631-4739
NSN 6240-01-219-1375