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 5950-01-374-7749
NSN 5910-00-085-4703
NSN 5990-01-408-6554
NSN 6150-00-596-9253
NSN 6130-01-447-3164
NSN 6320-00-036-3688
NSN 5960-00-443-9452
NSN 4140-01-519-9343
NSN 5895-00-137-8605
NSN 6220-00-354-8287
NSN 2925-01-248-6028
NSN 6320-00-149-7570