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 5998-01-325-8696
NSN 5930-01-176-9264
NSN 5915-01-306-2264
NSN 6650-01-053-8726
NSN 5945-00-408-0727
NSN 4140-01-476-9406
NSN 6650-01-449-0702
NSN 6645-01-324-2002
NSN 5920-00-081-8641
NSN 4140-00-939-8605
NSN 6240-01-286-7448
NSN 6135-01-506-4791