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 5835-00-427-2772
NSN 5996-01-504-2065
NSN 6150-01-500-2045
NSN 7035-01-550-9760
NSN 5905-01-387-4428
NSN 5925-00-644-5546
NSN 6320-00-882-7061
NSN 6135-01-559-3092
NSN 5895-01-360-4868
NSN 5960-00-008-1455
NSN 6220-01-268-2913
NSN 6220-01-253-6684