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 6610-01-069-1156
NSN 6150-01-004-8773
NSN 5998-01-268-4904
NSN 7035-01-349-4348
NSN 6220-00-984-7767
NSN 5905-01-435-4194
NSN 6645-01-029-4525
NSN 5996-00-248-4883
NSN 6220-01-216-9337
NSN 5990-00-125-5036
NSN 6610-00-764-4015
NSN 6110-01-422-1572