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 6105-01-512-7888
NSN 5965-01-098-1306
NSN 6620-00-153-0982
NSN 4140-01-004-9177
NSN 5930-01-564-5425
NSN 5910-00-663-5865
NSN 5998-01-514-8566
NSN 7035-01-472-8658
NSN 6320-01-558-2141
NSN 5910-01-475-9614
NSN 5930-00-387-9482
NSN 6645-01-478-2140