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 5910-00-284-8877
NSN 5960-01-495-0859
NSN 5920-01-312-1538
NSN 6620-01-590-3295
NSN 5960-00-506-1295
NSN 2925-01-397-8028
NSN 5996-01-246-0078
NSN 5950-01-415-8403
NSN 5996-01-422-3087
NSN 5975-00-833-0445
NSN 6130-01-166-2754
NSN 6645-01-055-3384