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 5999-01-213-4439
NSN 5905-01-241-9828
NSN 5835-00-073-0790
NSN 5895-01-486-1357
NSN 6320-00-937-5625
NSN 5915-01-222-8698
NSN 6685-01-185-2523
NSN 5930-00-186-9934
NSN 6320-01-436-9228
NSN 4140-00-846-3423
NSN 5835-00-247-0161
NSN 5920-00-148-8176