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 5855-01-051-4143
NSN 5925-00-158-5297
NSN 6240-00-797-4600
NSN 5855-00-174-3482
NSN 5835-01-362-0305
NSN 5905-01-488-5662
NSN 5920-01-468-1026
NSN 5895-00-867-6273
NSN 5855-01-076-9369
NSN 5990-01-485-0260
NSN 6145-01-406-5051
NSN 5975-01-289-1206