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 5895-00-362-2371
NSN 5965-01-382-9081
NSN 4140-01-351-3892
NSN 5999-00-149-0624
NSN 5950-01-351-0517
NSN 6220-01-472-4359
NSN 6220-01-423-7517
NSN 6320-00-331-7138
NSN 6135-01-554-8523
NSN 6685-00-920-8281
NSN 5835-00-779-2836
NSN 2925-01-063-7876