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 7035-01-560-6690
NSN 5985-01-137-2772
NSN 2925-00-233-5644
NSN 5930-01-547-3984
NSN 6150-00-466-9883
NSN 5855-01-406-4821
NSN 5915-00-934-0749
NSN 5925-00-283-8139
NSN 5960-01-449-1310
NSN 6320-01-442-3428
NSN 5990-01-400-3299
NSN 5998-00-950-9297