Solid Air Mizer Installation Video

Solid Air Mizer Installation

This video is intended for solid Air Mizer shaft seal installations on mixers, blenders, agitators or other processing equipment. If your design differs from that in this video, follow the instructions in the box or contact your local Inpro/Seal Representative.

When unboxing your new Air Mizer shaft seal, verify the following components are present:

  • Installation Instructions
  • Test Report
  • 3 Hex Keys
  • Air Mizer Shaft Seal

Before installing the seal, check for proper throttle movement and articulation. Ensure all internal components move radially within the cap and flange by manually pushing the throttle and stator assembly back and forth within the seal. Do not use prying tools or other objects to force the throttle assembly as this could damage the throttle and sealing interface.

Locate any burrs on the shaft that could damage the seal during installation. If necessary, use a file, emery cloth or abrasive pad to remove any imperfections. Then, thoroughly clean the stuffing box face or equipment housing and shaft surface to make sure it is free of debris.

Use a machinist square, or other suitable instrument, to check for perpendicularity of the shaft to the stuffing box face or equipment housing. Consult your local Inpro/Seal Representative if the measurement appears to be greater than 1.5 degrees out of square.

If possible, measure the radial run-out of the shaft with a dial indicator to identify the center of its rotating range. This will allow you to maximize the seal’s radial run-out capabilities. Consult your local Inpro/Seal Representative if the measurement appears to be greater than 0.125 inches or 3.175 mm radially. Typically, this requires the equipment to be de-coupled from the motor or driver.

Before mating the seal to the vessel, align the supplied face gasket or o-ring, or apply a thin layer of sealant, to the stuffing box face or equipment housing. With the cap screws facing outward, slide the seal down the shaft, making sure to position the seal inlet and gauge ports as close to horizontal as possible.

Loosely bolt the seal to the stuffing box face or equipment housing to hold it in place in preparation for seal alignment.

To maximize the shaft misalignment and run-out capabilities, always install the Air Mizer shaft seal as close to a centered position as possible. This is achieved by evenly spacing the supplied three hex keys around the shaft between the stator and the shaft surface to align the seal concentrically.

Once the seal is aligned, tighten the bolts to secure the seal to the stuffing box face or equipment housing. The hex keys can then be removed.

For ease of installation and setup, we recommend using an Inpro/Seal AM Control Panel as shown here.

Plum a ½ inch, or larger, diameter air, or inert gas, line from the AM Control Panel outlet port to the seal. Then a line from the seal to the AM Control Panel pressure return port,

Using the knob on the top of the regulator, set the air, or inert gas, pressure to a minimum of 5 to 10 psi over the process pressure. Note that there will be a small pressure difference between the regulator and pressure return gauges.

Please note that Air Mizer shaft seals require a constant supply of air, or gas, to function. Each seal should have a dedicated air or gas supply. Multiple seals should never be operated from a single regulator.

Inpro/Seal Air Mizer shaft seals can be installed on a variety of processing equipment across multiple industries. For any questions, please visit or contact your local Inpro/Seal Representative.

Facts at a Glance

Inpro/Seal Air Mizer shaft seals:

  • Permanently seal against product leakage
  • Seal liquids, slurries, bulk solids and dry powders
  • Require zero maintenance or periodic rebuilds
  • Accommodate radial, angular and axial shaft movement simultaneously
  • Are custom engineered to fit your equipment
  • Are backed by our best-in-class performance guarantee

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Inpro/Seal increases reliability and enhances performance on rotating equipment across multiple industries with permanent bearing protection and complete shaft seals. Read more about our innovative technologies or the industries we serve.

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