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 5999-01-542-5150
NSN 2925-00-041-0439
NSN 5945-01-528-6909
NSN 5855-01-308-0955
NSN 6240-01-513-9642
NSN 6220-01-025-1373
NSN 6645-00-372-2618
NSN 5935-01-547-1731
NSN 6105-00-692-8709
NSN 5905-01-634-0595
NSN 5855-00-054-4686
NSN 5996-00-890-3350