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 5945-00-494-4975
NSN 5895-01-465-7639
NSN 6240-01-461-3129
NSN 5915-01-623-6787
NSN 5990-00-881-6624
NSN 5998-01-389-1919
NSN 5915-00-437-6694
NSN 2925-01-446-6523
NSN 5905-01-121-1508
NSN 5895-00-140-3308
NSN 5925-00-170-4090
NSN 5905-00-467-8404