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 6135-00-851-8575
NSN 6645-00-159-8377
NSN 6645-01-250-5154
NSN 6610-00-859-6136
NSN 5990-01-579-2711
NSN 7035-01-316-7860
NSN 5915-00-228-5429
NSN 5996-00-568-8288
NSN 5965-01-560-8572
NSN 5895-00-893-0733
NSN 6645-00-530-3468
NSN 6645-00-192-1152