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 6620-01-200-8176
NSN 6650-00-891-9850
NSN 5905-01-196-4628
NSN 5920-01-416-6211
NSN 6320-01-143-3597
NSN 5855-00-560-0110
NSN 5960-01-573-6483
NSN 6620-00-400-4237
NSN 5950-01-205-6903
NSN 6130-01-472-2483
NSN 5985-01-619-0894
NSN 6145-00-082-5172