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 5996-01-518-4674
NSN 4140-00-285-6042
NSN 5945-01-168-9715
NSN 6645-00-171-9639
NSN 6620-01-551-7071
NSN 5975-01-261-6328
NSN 5945-00-314-4554
NSN 5999-00-230-9304
NSN 7035-00-193-2269
NSN 6320-00-270-8222
NSN 6645-00-922-8312
NSN 6650-00-391-8404