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 6620-01-159-4330
NSN 5996-00-173-2620
NSN 5910-00-141-9560
NSN 5920-00-151-4039
NSN 6150-00-325-8597
NSN 6105-01-170-1039
NSN 5996-01-116-1087
NSN 5999-01-432-2737
NSN 5855-00-482-9876
NSN 6220-00-272-7497
NSN 2925-00-275-1807
NSN 5990-00-613-2279