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 5996-01-060-2845
NSN 5925-00-876-9219
NSN 6620-00-970-2363
NSN 5998-01-526-6915
NSN 5960-01-416-6187
NSN 6685-00-299-8496
NSN 6320-01-449-1014
NSN 6110-01-431-6906
NSN 5835-01-456-3922
NSN 5975-01-313-9812
NSN 6135-01-543-4256
NSN 6650-01-406-5322