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 6130-01-254-1217
NSN 6610-01-375-1527
NSN 5975-01-197-5577
NSN 7035-01-250-5744
NSN 5895-00-255-4094
NSN 6685-01-629-9360
NSN 5998-01-538-8299
NSN 5930-01-369-5865
NSN 6610-01-578-1976
NSN 5965-01-406-3156
NSN 6130-01-553-2017
NSN 5910-01-462-1205