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 5925-01-049-3180
NSN 5910-01-498-0289
NSN 6620-01-116-3983
NSN 6610-01-152-2821
NSN 5910-00-891-8735
NSN 6320-01-532-7491
NSN 5835-01-558-9444
NSN 5960-01-299-4760
NSN 5965-01-164-0561
NSN 5960-01-318-0987
NSN 6110-01-162-8032
NSN 5996-01-256-2073