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 5835-01-632-6627
NSN 6130-01-098-6675
NSN 6320-00-186-6452
NSN 6105-00-690-0362
NSN 6240-01-224-7656
NSN 7035-00-541-8516
NSN 5996-00-983-8667
NSN 4140-00-422-5571
NSN 2925-01-076-5219
NSN 6130-01-383-9709
NSN 6110-01-308-3951
NSN 2925-00-960-4737