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 6105-01-407-8697
NSN 5999-00-872-1352
NSN 6105-01-297-2321
NSN 5855-00-973-5717
NSN 6650-01-183-0711
NSN 6240-01-465-7519
NSN 6620-01-378-5579
NSN 5998-01-383-4863
NSN 5910-00-557-0923
NSN 6240-00-500-1896
NSN 5985-00-929-6174
NSN 6150-01-634-0575