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 5920-01-101-5852
NSN 5895-01-252-2530
NSN 6220-00-985-3465
NSN 5855-00-198-3197
NSN 5920-01-196-4614
NSN 6240-00-027-9931
NSN 5999-01-533-8663
NSN 5935-01-299-3286
NSN 6240-01-243-2707
NSN 6145-01-322-7606
NSN 5945-01-573-4452
NSN 6110-00-594-7640