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 5985-01-364-1149
NSN 5996-00-538-1357
NSN 5910-00-542-2548
NSN 6150-01-089-8949
NSN 6610-00-942-7272
NSN 5950-01-085-2301
NSN 6135-01-647-0386
NSN 5835-01-416-6455
NSN 6130-00-831-8264
NSN 5905-01-175-2764
NSN 5915-01-107-6488
NSN 5945-01-415-1692