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 5965-00-396-3411
NSN 5925-01-071-3997
NSN 5990-01-091-9595
NSN 6150-01-020-6683
NSN 6620-00-278-7313
NSN 5999-01-421-9433
NSN 5945-01-545-0933
NSN 5935-01-571-5418
NSN 4140-01-323-8629
NSN 6645-01-248-3123
NSN 7035-00-541-8516
NSN 5975-01-326-9779