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 5975-00-994-5648
NSN 5975-01-027-9132
NSN 5855-01-524-2040
NSN 2925-01-314-5833
NSN 5935-01-348-9030
NSN 5915-00-617-9477
NSN 5990-01-031-4130
NSN 6105-00-115-6399
NSN 5835-00-602-4750
NSN 6220-01-056-6507
NSN 5915-00-528-9286
NSN 6110-01-176-6881