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 5950-00-134-8199
NSN 5930-00-496-7492
NSN 5998-01-537-1504
NSN 6620-00-169-1609
NSN 5895-00-455-0248
NSN 6240-01-394-8592
NSN 6135-01-300-8455
NSN 5975-01-113-7397
NSN 6220-01-344-1647
NSN 5985-00-988-9743
NSN 6645-01-609-4753
NSN 6610-01-165-9458