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 5835-00-187-1481
NSN 5915-01-361-8860
NSN 6110-01-506-3405
NSN 6150-01-284-1052
NSN 5930-01-256-3261
NSN 5925-01-573-8257
NSN 2925-00-305-8030
NSN 6645-01-106-4303
NSN 4140-01-515-7294
NSN 5835-00-177-2970
NSN 6610-00-716-2017
NSN 5950-01-634-0677