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 6145-01-279-1264
NSN 5960-01-614-8005
NSN 6610-01-044-1140
NSN 5950-01-091-1881
NSN 6610-01-224-7247
NSN 5905-00-156-7114
NSN 5855-01-618-1921
NSN 5975-01-524-8300
NSN 6645-00-596-5388
NSN 5925-00-529-0441
NSN 5835-01-424-0054
NSN 5905-00-948-0295