Pentair Shaft Seal, 5/8" Shaft, Buna (354545S) suctions this Waterway black weir door

this Waterway black weir door assembly is a practical replacement when the original skimmer door needs renewal

Pump impellers should be matched by horsepower

That makes it a strong choice in repairs where presentation matters just as much as usability

The included nut adds practical value because it helps the replacement feel more complete and reduces the need to reuse fastening hardware that may already be worn

a replacement option when the existing cylinder is damaged

Pentair Shaft Seal, 5/8" Shaft, Buna (354545S) suctions this Waterway black weir doorService a leaking pump wet end with this 5 8" Buna shaft seal. The seal creates a critical barrier between the impeller area and the motor side of the pump, helping prevent water from reaching bearings, windings, and other motor components. This replacement is commonly used when water is dripping from the seal plate area, when the motor is being replaced, or when the pump is already disassembled for impeller work. Correct installation and clean seal