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 5965-00-234-7338
NSN 5920-01-362-3866
NSN 6150-01-408-8228
NSN 6685-01-020-5635
NSN 6685-00-079-1415
NSN 5895-01-607-6304
NSN 6220-01-243-9971
NSN 6110-01-269-8482
NSN 5915-00-175-8238
NSN 6685-01-029-3416
NSN 5895-01-106-4161
NSN 7035-01-548-1864