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 2925-00-888-9551
NSN 6320-01-052-2118
NSN 5999-01-381-1139
NSN 5835-01-209-6410
NSN 5960-01-389-9941
NSN 5950-01-394-1737
NSN 5999-00-619-4566
NSN 5935-00-710-4178
NSN 7035-01-276-9016
NSN 5985-01-535-7298
NSN 2925-00-391-0331
NSN 6110-01-101-8716