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 5990-01-443-2931
NSN 6110-01-546-2548
NSN 6130-00-869-8908
NSN 5930-00-526-1928
NSN 5935-00-231-1169
NSN 5915-00-707-2297
NSN 6320-00-400-8042
NSN 6685-00-165-5893
NSN 6650-00-269-5000
NSN 6105-00-595-5378
NSN 5835-01-079-9533
NSN 6105-00-686-5995