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 6105-01-232-9625
NSN 6620-01-482-9024
NSN 4140-01-634-0330
NSN 5998-01-456-8454
NSN 5920-01-199-5522
NSN 5950-00-946-4572
NSN 5950-00-374-0897
NSN 5835-01-599-1876
NSN 6145-01-158-4833
NSN 5895-01-050-8909
NSN 5855-01-600-4130
NSN 2925-01-129-1261