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 6610-00-899-1751
NSN 6110-00-709-2720
NSN 5990-00-919-4653
NSN 6645-01-590-4174
NSN 5915-01-534-9770
NSN 6110-01-005-2191
NSN 5985-01-004-1499
NSN 6685-00-471-4125
NSN 5935-01-050-1400
NSN 6645-00-724-7668
NSN 5930-00-294-2697
NSN 5945-01-508-5024