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 5960-01-589-6846
NSN 6645-00-558-0028
NSN 5990-01-483-7313
NSN 5975-00-422-0613
NSN 6610-00-935-7131
NSN 5925-01-104-3253
NSN 5950-00-113-5347
NSN 2925-00-139-8309
NSN 5960-00-341-5948
NSN 5920-01-217-8379
NSN 5935-00-827-1005
NSN 5835-01-090-8559