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 6650-01-373-1580
NSN 6240-01-390-6996
NSN 6220-00-730-5808
NSN 6105-01-076-6586
NSN 6110-00-301-4874
NSN 5925-01-234-8312
NSN 5996-00-127-3325
NSN 5998-01-246-5074
NSN 6150-01-445-5366
NSN 4140-01-367-5824
NSN 5925-01-306-4454
NSN 6240-01-468-5576