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 5915-01-648-7354
NSN 5985-01-508-4226
NSN 6620-01-559-1921
NSN 6320-01-578-6006
NSN 5855-01-122-9418
NSN 6685-00-647-3883
NSN 5998-00-222-4439
NSN 5975-01-559-9279
NSN 5895-00-120-1195
NSN 5835-00-003-0295
NSN 5895-01-215-1678
NSN 6240-01-194-2206