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 6645-01-509-7326
NSN 5895-00-278-5194
NSN 6320-01-449-1014
NSN 5855-01-317-5354
NSN 2925-01-509-3783
NSN 5935-01-447-3782
NSN 6105-00-553-1941
NSN 6145-01-089-5819
NSN 5975-00-915-7632
NSN 6130-01-004-2911
NSN 5998-01-536-4553
NSN 6320-01-426-8947