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 5925-01-364-0771
NSN 6145-00-095-2492
NSN 6610-00-907-3164
NSN 6110-01-003-9614
NSN 5960-01-546-2379
NSN 5996-01-486-3733
NSN 2925-00-604-7487
NSN 6685-01-245-8952
NSN 5975-00-919-2125
NSN 6650-01-259-1761
NSN 6220-01-409-1585
NSN 6130-01-352-7900