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 5985-01-176-1737
NSN 5999-00-760-5920
NSN 6150-01-099-9619
NSN 5895-01-541-0134
NSN 5855-01-631-2118
NSN 6685-01-251-3797
NSN 5960-01-459-6665
NSN 6130-00-960-9158
NSN 5998-00-126-2009
NSN 6650-01-069-2501
NSN 5855-01-384-3314
NSN 6240-00-227-0135