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 5915-01-026-7833
NSN 6220-01-514-8217
NSN 2925-01-266-5229
NSN 6145-01-144-2374
NSN 2925-01-320-6512
NSN 6685-01-237-5942
NSN 5910-01-604-6562
NSN 5998-01-119-5019
NSN 6105-01-459-4831
NSN 5930-00-252-1697
NSN 5935-01-265-3085
NSN 5965-00-679-5626