U.S. Seal Shaft Seal [PS-309] [7/8" Shaft Size] [Buna] (PS-309) potterbrumfield Using the correct replacement helps

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

The 800001B is a practical service part when a compatible Raypak Hi Delta heater needs a heat exchanger header gasket to restore dependable sealing performance

The design supports the original layout

Hayward impeller screw

U.S. Seal Shaft Seal [PS-309] [7/8" Shaft Size] [Buna] (PS-309) potterbrumfield Using the correct replacement 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,