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 5990-01-633-9503
NSN 6130-00-230-6324
NSN 5905-01-399-5387
NSN 5950-01-602-8755
NSN 6105-00-020-3591
NSN 6105-01-586-8166
NSN 6220-01-560-9909
NSN 5920-01-143-2212
NSN 5996-01-299-5470
NSN 6110-01-657-4249
NSN 6135-00-930-5372
NSN 5905-01-357-7001