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 5985-01-398-0004
NSN 6645-00-930-3566
NSN 6220-01-502-6030
NSN 6135-01-511-1975
NSN 5996-01-560-2777
NSN 6150-01-367-6958
NSN 5950-01-502-8219
NSN 5950-01-521-9506
NSN 6685-01-197-7064
NSN 2925-00-383-3523
NSN 6135-01-010-0891
NSN 6105-00-566-2643