Graphite seals are mainly used for bearing cavity oil sealing in aero engines and gas turbines, effectively isolating the various support bearing cavities from the engine's airflow environment, protecting bearings and oil from high-temperature airflow damage, and preventing oil leakage.

Brush seal products are mainly used for shaft end sealing, inter-stage sealing, and other secondary flow paths in the air systems of aero engines and gas turbines, serving to seal the gas.