Brush Seal Application Areas

The basic structure of a brush seal consists of a front plate, a back plate, and high-density, high-temperature alloy bristles sandwiched between them; these bristles are angled relative to the direction of rotor rotation-typically within a range of 35° to 60°.

Brush seals were originally developed for use in aero-engines but were subsequently extended to other fields, such as industrial gas turbines and steam turbines. This technology represents one of the key technologies driving the development of modern turbomachinery and is applied in various types of turbomachinery, including aero-engines, industrial gas turbines, and steam turbines. Although brush seals were first implemented in aero-engines, in recent years their application has expanded to encompass other forms of turbomachinery, such as industrial gas turbines and steam turbines.