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 5915-00-972-5460
NSN 5915-00-552-4355
NSN 6645-00-044-7011
NSN 5950-01-286-9055
NSN 6150-01-305-3653
NSN 6145-00-259-6946
NSN 6110-01-147-4628
NSN 5855-00-446-5921
NSN 6145-00-269-4271
NSN 6110-00-112-1476
NSN 6130-01-069-2087
NSN 5975-00-991-7189