FSC 2825 is the U.S. Federal Supply Class for Steam Turbines and Components, in Federal Supply Group 28 (Engines, Turbines, and Components). Aviation Parts Executive lists 6 parts whose part numbers carry a National Stock Number (NSN) in this class. Search any NSN or NIIN on our site to open the part.

Includes mercury vapor turbines.

Our Parts In FSC 2825 (6)

Part Number	NSN	Item Name	Manufacturer
2150903-5	2825-01-588-1157	Seal Ring Assembly, Labyrinth	Cessna
23036885	2825-01-502-1138	Seal Ring Assembly, Labyrinth	Rolls Royce
23036886	2825-01-502-1139	Seal Ring Assembly, Labyrinth	Rolls Royce
23037446	2825-01-290-9151	Seal Ring Assembly, Labyrinth	Rolls Royce
23039175	2825-01-539-7127	Diaphragm, Steam Turbine Engine	Rolls Royce
68-1055	2825-01-395-3875	Seal Ring Assembly, Labyrinth	Goodrich

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NSNs, item names and Federal Supply Class descriptions come from the Defense Logistics Agency's public Federal Logistics Information System data (PUB LOG, October 27, 2026 release). We show an NSN only when the government record lists our part number under the same manufacturer (CAGE code). Confirm the NSN and part number on your solicitation before you order.