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 5905-01-434-8994
NSN 5950-01-160-5984
NSN 6145-01-328-7991
NSN 6145-01-223-6996
NSN 6645-01-517-0259
NSN 5905-00-244-6590
NSN 5990-01-055-4012
NSN 5855-01-218-3735
NSN 5965-00-913-9545
NSN 5925-00-068-0740
NSN 5855-00-821-7512
NSN 6320-00-646-3311