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 5965-01-041-8139
NSN 5985-00-153-0864
NSN 5855-00-138-2386
NSN 5985-01-146-5330
NSN 6220-01-288-0416
NSN 5930-00-131-9675
NSN 5930-01-311-5457
NSN 6320-01-309-4407
NSN 6610-00-161-7439
NSN 5935-01-508-8591
NSN 6130-00-923-3383
NSN 6150-01-071-8507