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 5835-01-100-3265
NSN 5855-00-058-1293
NSN 6645-01-591-3970
NSN 5975-01-536-0794
NSN 6610-00-951-4451
NSN 5925-01-060-3403
NSN 6685-01-442-3702
NSN 6685-00-642-0533
NSN 6145-01-258-6673
NSN 6130-01-239-9831
NSN 6610-01-503-8914
NSN 5945-01-640-7097