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 5935-00-557-1798
NSN 6150-00-758-3602
NSN 6135-01-412-0404
NSN 5905-01-059-5504
NSN 6320-01-462-2295
NSN 7035-01-270-0325
NSN 5920-00-952-9029
NSN 5996-01-127-5431
NSN 5975-01-438-3690
NSN 5920-01-573-7609
NSN 5925-00-038-6147
NSN 5998-00-315-2721