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 6135-01-508-6083
NSN 5960-00-081-3712
NSN 6320-00-139-1090
NSN 5925-00-480-6710
NSN 5975-01-486-1882
NSN 4140-00-518-2744
NSN 5999-01-070-5371
NSN 5930-00-444-5844
NSN 5990-01-504-9265
NSN 5835-01-090-0784
NSN 5855-00-466-2309
NSN 5855-01-156-0417