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 6320-01-204-2922
NSN 5935-01-201-6587
NSN 6610-01-265-0999
NSN 6645-00-303-7698
NSN 5960-00-584-4553
NSN 5925-00-145-9065
NSN 5895-01-417-3218
NSN 5998-01-633-3671
NSN 6150-00-900-4984
NSN 5945-00-624-0158
NSN 7035-01-428-2336
NSN 5915-01-286-2834