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 6150-01-266-1736
NSN 6220-01-569-5940
NSN 6220-00-595-6954
NSN 6145-01-618-6159
NSN 5998-00-885-0874
NSN 6620-00-130-0815
NSN 5999-01-123-4343
NSN 5945-01-224-6192
NSN 5925-00-186-8669
NSN 6130-01-167-2590
NSN 6240-00-489-8531
NSN 5950-01-349-8456