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 5855-01-250-2421
NSN 2925-00-233-5644
NSN 2925-01-415-2140
NSN 6130-01-431-0793
NSN 5950-00-938-1391
NSN 5965-01-370-1891
NSN 6620-00-054-4778
NSN 5915-01-053-2956
NSN 6620-01-483-1138
NSN 2925-01-020-5099
NSN 5915-01-395-7592
NSN 5960-00-080-5670