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 6610-01-074-2820
NSN 2925-01-398-6751
NSN 5855-01-634-0259
NSN 5835-01-424-0054
NSN 6220-01-209-9171
NSN 5895-01-561-5532
NSN 5965-00-940-8699
NSN 5905-00-870-0136
NSN 5965-01-213-7256
NSN 5855-01-261-5495
NSN 6650-00-259-2605
NSN 6145-00-493-4073