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 5950-01-366-0083
NSN 5930-01-324-8508
NSN 6150-00-133-5742
NSN 5985-00-939-0388
NSN 6150-01-284-0234
NSN 5996-01-495-4331
NSN 4140-01-555-8190
NSN 5996-00-907-9748
NSN 6650-01-146-5000
NSN 5935-00-614-0631
NSN 5920-01-372-0840
NSN 6105-00-947-2561