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 6105-01-392-0451
NSN 5975-00-504-9347
NSN 5950-00-206-3213
NSN 6135-01-430-3119
NSN 5975-00-087-9415
NSN 6105-01-381-7242
NSN 5905-01-462-5417
NSN 2925-01-280-1911
NSN 5935-01-600-3326
NSN 5990-01-115-9488
NSN 6130-01-592-3441
NSN 5935-01-591-6063