Technetics Brush Seals

Reduce Leakage by 5 to 17 times by replacing labyrinth seals with brush seals
thus providing significant turbo-machinery efficiency and output gains.

Brush seals work by absorbing the radial deflections between the shaft and rotor during transient operation
The seal then follows the rotor back to the steady-state operating position to maintain minimum leakage.

The brush pack is composed of thousands of finely packed 50 to 150 micron diameter wire bristles.
The bristle material, a cobalt or nickel alloy, is selected to provide an optimal combination of wear properties
and oxidation resistance.

The backplates and sideplates are typically fabricated from stainless steel or nickel alloys. The primary
consideration is thermal expansion and contraction of the case material.

Technetics can manufacture brush seals from 2 inches to 75 inches in diameter. Brush seals can be
delivered as a single unit or in multiple segments. The bristles can be configured radially inward, radially
outward, or axially.