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 5935-01-259-2889
NSN 5930-01-507-7954
NSN 6645-00-816-5337
NSN 6320-00-583-3104
NSN 6240-00-166-2271
NSN 5945-01-410-8747
NSN 5950-01-036-1007
NSN 6220-01-435-6297
NSN 5975-01-495-1343
NSN 5835-00-166-9413
NSN 5910-01-633-9963
NSN 5915-01-255-8278