Process Description
Turbine air seals can be outer air seals, interstage seals or have another sealing function in the engine and are supplied as an individual segment, as a complete ring or are part of a more complex component (assembly).

Seals can be produced as flash butt-welded rings, forged or cast rings or as a fabrication of sheet metal details. Also, thin wall cast segments and supports are more and more used nowadays. The seals are made from corrosion and high temperature resistant super alloys.

While most of the seals made at Sulzer Metco are located in the hot, turbine section of the engine (HPT, LPT), compressor seals (HPC) are also manufactured. The range of seals includes:

• Honeycomb seals
• Plasma coated seals
• Large rings
• Heat shields
• Ring segments

Features of Turbine Air Seals
Manufacturing Processes