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 6645-01-076-4655
NSN 6620-01-382-7392
NSN 6220-01-359-4857
NSN 6610-00-355-0450
NSN 6220-01-502-5329
NSN 6145-00-164-8669
NSN 5895-00-726-4831
NSN 5965-01-322-8136
NSN 5996-00-407-3003
NSN 5925-01-100-0970
NSN 5915-01-408-8274
NSN 5925-01-424-2963