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 5925-01-494-5867
NSN 6150-01-505-1531
NSN 5996-01-139-2843
NSN 6645-01-023-8020
NSN 7035-01-334-5855
NSN 6645-01-268-0544
NSN 5998-00-277-7552
NSN 6650-01-123-3110
NSN 5930-01-289-2118
NSN 5996-01-136-9353
NSN 5905-01-217-8883
NSN 6150-00-288-6245