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 6110-01-074-4228
NSN 5930-01-591-0607
NSN 6610-01-516-7278
NSN 6145-00-714-3228
NSN 6650-00-086-1571
NSN 6620-01-216-3459
NSN 6620-00-722-3875
NSN 5920-01-577-4214
NSN 5998-00-139-6499
NSN 5990-01-423-8189
NSN 5910-01-204-7223
NSN 5930-00-499-1886