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 5960-00-223-5970
NSN 6610-01-461-8180
NSN 5998-00-111-3180
NSN 4140-01-415-6013
NSN 6240-01-003-8666
NSN 6130-01-631-4386
NSN 6610-01-483-1317
NSN 5920-01-020-7659
NSN 6135-01-307-6006
NSN 5920-00-010-6652
NSN 4140-01-184-1766
NSN 5920-00-492-5516