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 6145-01-401-3713
NSN 5985-01-293-6000
NSN 6135-01-100-3593
NSN 6685-01-065-0530
NSN 5925-01-152-1188
NSN 5915-00-030-0343
NSN 5930-00-153-0230
NSN 5905-00-081-3922
NSN 4140-01-509-2323
NSN 5895-01-109-4052
NSN 6650-01-265-0650
NSN 5960-00-084-8527