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 6320-00-977-3930
NSN 5999-00-318-9135
NSN 4140-01-453-8697
NSN 5855-01-147-6024
NSN 6110-01-279-4754
NSN 5990-00-170-4239
NSN 5895-01-261-9616
NSN 2925-01-341-0457
NSN 6220-00-883-5167
NSN 6320-01-512-2031
NSN 5998-01-464-7775
NSN 5910-00-586-4515