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 5935-01-316-7019
NSN 5855-00-436-3852
NSN 5925-00-425-6228
NSN 5990-00-900-4459
NSN 6645-01-653-2848
NSN 6685-01-443-2983
NSN 6650-01-507-7004
NSN 5910-01-558-9720
NSN 6220-01-375-7521
NSN 5990-01-546-1649
NSN 5998-01-468-6081
NSN 6145-00-317-2087