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 5998-00-564-0410
NSN 5950-01-010-4319
NSN 6130-00-048-0907
NSN 6110-00-343-8183
NSN 5895-01-348-8855
NSN 6105-01-192-1741
NSN 6320-01-309-9595
NSN 6150-01-024-5002
NSN 5998-00-100-0491
NSN 5999-00-525-4320
NSN 6685-00-527-9335
NSN 5905-01-188-4746