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 4140-00-859-2412
NSN 6130-01-292-1125
NSN 6145-00-278-0697
NSN 6650-01-144-2509
NSN 6240-01-469-7324
NSN 6645-00-222-2785
NSN 5895-01-147-2931
NSN 5975-00-269-4365
NSN 6110-01-377-4718
NSN 5835-01-602-0311
NSN 5925-00-941-2176
NSN 4140-00-517-7902