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 5855-01-550-5219
NSN 5855-01-100-3272
NSN 5960-01-605-9921
NSN 6320-01-072-2073
NSN 6150-01-245-5337
NSN 5998-01-051-3897
NSN 6620-00-858-7317
NSN 6685-00-949-4829
NSN 6610-01-503-5447
NSN 6320-01-326-1316
NSN 5920-01-470-5835
NSN 6610-01-481-9575