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 5999-01-063-1870
NSN 5910-01-284-0467
NSN 5975-01-277-3799
NSN 5950-01-658-7180
NSN 6620-01-230-8064
NSN 5910-01-083-2323
NSN 5975-01-136-4988
NSN 6685-01-578-5662
NSN 5855-01-103-8650
NSN 5895-00-416-6141
NSN 5905-01-368-2541
NSN 2925-01-208-3639