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 5996-01-205-6963
NSN 6240-01-487-7516
NSN 5985-01-357-6127
NSN 5985-01-246-2582
NSN 5935-01-533-6930
NSN 6110-00-283-3630
NSN 5920-01-109-1875
NSN 5925-01-398-2877
NSN 5985-01-472-3504
NSN 6145-01-239-3638
NSN 5998-01-027-1222
NSN 5925-01-489-2791