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 5965-00-879-7287
NSN 5965-01-567-2975
NSN 6150-00-152-9901
NSN 2925-00-416-2894
NSN 5895-00-283-5581
NSN 5975-00-237-4297
NSN 5945-00-317-4812
NSN 4140-01-010-0615
NSN 6240-00-765-4220
NSN 5935-00-767-5819
NSN 5925-01-236-8070
NSN 6645-01-479-5364