Pentair Sta-Rite DuraGlas II 3/4" Shaft Seal, Buna, Pre-1998 (U109-372SS) divertorvalves or damaged impeller

or damaged impeller

temperature changes

3-piece design supports more practical maintenance

or no longer swinging correctly

Matching the correct configuration helps reduce installation problems and supports more predictable operation

Pentair Sta-Rite DuraGlas II 3/4" Shaft Seal, Buna, Pre-1998 (U109-372SS) divertorvalves or damaged impellerThis Pentair Sta Rite replacement is built for pump repair and helps service older DuraGlas II pumps using a pre 1998 3 4 inch Buna seal. It helps reduce leaks at the motor interface, making it a practical choice when the original part is cracked, worn, leaking, stripped, brittle, or missing. It is especially useful for targeted repairs where replacing a larger pump, filter, or cleaner assembly is not necessary. Confirm the part number, model family,