Installing a PSS Shaft Seal: Step 1 Cleaning the Shaft

Published: 11/01/13 at 08:40am

There have been a lot of questions on how to properly install a PSS dripless shaft seal. So we will be doing a series of blogs going through each step of the process. In order to properly install a PSS unit, you must first begin with a clean shaft.

Removing The Shaft Coupling

The first step is to unbolt the shaft coupling from the transmission coupling. Once this has been done remove the shaft coupling completely. Pull the shaft back far enough so that you can remove the old stuffing box. Next remove the old stuffing box and all residues left behind. If you would like to watch this being done check out our “Removing The Shaft Coupling” video on YouTube.

Cleaning The Shaft

Now we will need to clean the shaft and the best way to do this is to use 600 grit wet/dry sand paper around the exposed area of the shaft that the PSS shaft seal will cover. Why you may ask? Well we want to make sure that when you slip on the shaft seal that nothing will catch on the o-rings and rip them. The o-rings are located on the inside of the stainless steel rotor. If they are damaged then it renders the PSS shaft seal pretty much useless. Pay close attention around the keyway as this is a commonplace for burs, which can catch and rip the o-rings.

Careful Using Solvents

If any solvents or degreasers were used on this area of the shaft please clean with Acetone and rinse with dish soap and water, as any solvents that come into contact with the PSS shaft seal will cause the components to breakdown at an increased rate. It could also affect the seal itself if anything other than water gets on the face of the carbon or stainless steel rotor.

The Next Step

Once all burs are removed and the shaft has been cleaned with sandpaper you are ready to begin installation of the PSS shaft seal. Stay tuned for the next segment where we begin the process of installing the PSS shaft seal. And as always if you have any questions feel free to ask here in the comments section or email us at or give us a call 425-355-3669.

-Kenneth Planck