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 5990-01-278-9985
NSN 6150-00-198-2503
NSN 5835-01-481-4204
NSN 6645-00-408-3537
NSN 6110-01-507-6170
NSN 6105-00-099-8818
NSN 5996-00-226-5364
NSN 2925-00-992-7904
NSN 6150-00-988-4482
NSN 5925-01-413-1638
NSN 5935-00-373-9350
NSN 5935-00-270-1271