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 5895-01-406-2638
NSN 5855-01-478-6583
NSN 2925-01-295-2017
NSN 7035-01-392-9838
NSN 5996-01-165-7326
NSN 6645-01-022-2632
NSN 6240-01-059-3563
NSN 5910-01-615-2104
NSN 5935-00-067-3514
NSN 5930-01-567-1616
NSN 6320-00-823-2015
NSN 6105-00-162-2060