High-temperature seal for corrugated pipes 
Corrugated pipe core (Inconel 718 made in the US)
The shaft is sealed with flexible graphite gaskets 
Materials of the friction pair: yG6, Sic antimony impregnated graphite KC6709 (made in Japan)

Operation parameters:
Pressure: 2.7MPa
Temperature: -40-750^oC(232^oC)
Speed: 23m/s
Standard size: 30-100