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 5915-00-440-0756
NSN 7035-01-357-7786
NSN 5910-00-088-8133
NSN 6320-01-198-4024
NSN 5975-00-494-0703
NSN 6240-01-253-0687
NSN 5990-01-644-3095
NSN 6110-00-758-2051
NSN 6105-01-064-0269
NSN 5915-00-150-4694
NSN 5950-00-611-2601
NSN 5945-01-435-5874