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 5999-01-483-4198
NSN 5925-01-193-3204
NSN 5925-00-631-1078
NSN 6240-01-516-8393
NSN 5990-01-605-4769
NSN 5915-00-825-4665
NSN 2925-01-471-4912
NSN 6685-01-331-3491
NSN 6220-01-581-4358
NSN 5895-00-270-6595
NSN 5985-00-782-8361
NSN 6110-01-605-1590