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 5998-00-583-6570
NSN 6685-01-363-2765
NSN 5855-00-908-9314
NSN 6220-01-501-4476
NSN 6685-01-375-6747
NSN 6130-01-492-6756
NSN 5960-01-323-3143
NSN 5935-00-379-4756
NSN 5935-00-100-6038
NSN 6610-01-601-1833
NSN 5930-01-538-5819
NSN 6645-00-922-8312