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 5950-00-099-9612
NSN 4140-01-194-2529
NSN 6220-00-383-4474
NSN 5925-01-023-9116
NSN 5960-00-721-1744
NSN 6130-00-452-9464
NSN 6650-00-264-0664
NSN 5975-00-038-2813
NSN 5855-00-904-9469
NSN 6130-01-328-8108
NSN 5925-01-536-3867
NSN 4140-01-012-2460