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 6650-01-423-2834
NSN 5996-01-022-9447
NSN 6135-00-203-9645
NSN 6130-01-127-3417
NSN 5950-01-588-3406
NSN 5905-01-369-8189
NSN 7035-01-437-4137
NSN 6650-01-174-0928
NSN 7035-00-803-3056
NSN 5920-01-655-7675
NSN 6620-00-006-6418
NSN 5915-00-493-5778