U.S. Seal Shaft Seal [PS-309] [7/8" Shaft Size] [Buna] (PS-309) potterbrumfield A properly selected panel helps

A properly selected panel helps support cleaner replacement fit

Using the correct replacement helps avoid introducing unwanted changes to system response

The Waterway Poly Jet compatibility gives this tool practical value because specialty fitting tools work best when they match the intended fitting family closely

and model notes against the existing component

The design supports the original layout

U.S. Seal Shaft Seal [PS-309] [7/8" Shaft Size] [Buna] (PS-309) potterbrumfield A properly selected panel helpsThe U. S. Seal PS 309 shaft seal is built for compatible 7 8 inch shaft pump applications and uses Buna sealing material to restore the pumps primary barrier against leakage. In larger shaft applications, proper seal selection matters even more, because incorrect fit can undermine the entire rebuild no matter how good the surrounding parts are. This replacement is especially useful when the original shaft seal has started leaking, hardened with age,