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 5998-01-361-1689
NSN 6220-01-331-3468
NSN 6145-00-066-8695
NSN 5950-01-216-1054
NSN 6135-00-782-6988
NSN 5915-01-260-9248
NSN 6130-01-188-7411
NSN 7035-01-518-0561
NSN 5925-00-499-1203
NSN 5925-01-590-1623
NSN 5835-00-835-7838
NSN 5975-00-099-9312