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 6320-01-415-0953
NSN 5960-00-505-9194
NSN 6135-00-062-5080
NSN 5998-01-377-0528
NSN 5920-01-483-2299
NSN 5965-01-314-1268
NSN 5910-00-270-1968
NSN 5960-01-044-4902
NSN 5895-00-349-8999
NSN 6645-01-076-4655
NSN 5950-01-195-8451
NSN 6135-01-048-0910