Sta-Rite U109-6B Shaft Seal
This is the U109-6B shaft seal. A leaking shaft seal shows up as water dripping from underneath the pump, near where the motor meets the pump body, while the pump is running or just after it shuts off.
Replacing a shaft seal means the pump has to come apart far enough to access the shaft, so it is a good time to also check the impeller and any gaskets nearby for wear. A seal that has just started to weep should be replaced promptly, since running it longer can let water reach the motor windings and cause a much more expensive failure.
Key Features
- Genuine-fit Sta-Rite U109-6B replacement shaft seal
- Keeps pumped water from tracking back along the shaft into the motor
- Direct fit replacement for the original Sta-Rite part
Applications
- Fixing a pump that drips water from underneath while running
- Servicing the Sta-Rite pump this part is cataloged for
- Routine rebuild alongside the impeller and gaskets
- Preventing water from reaching the motor windings through a worn seal
Specifications
- Brand: Sta-Rite
- Manufacturer Part Number: U109-6B
- Part Type: Shaft seal
- Quantity Per Pump: 1
- Condition: New
Frequently Asked Questions
Q: Is it safe to keep running the pump with a small seal leak?
Not for long. A small drip can progress and eventually let water reach the motor windings, turning a low-cost seal replacement into a motor or full pump replacement.
Q: How do I know my shaft seal is leaking?
Water dripping from underneath the pump, at the joint between the motor and the pump body, while it runs or right after it shuts off is the classic sign of a worn shaft seal.
Q: Can I touch the sealing face when installing this?
Avoid it. Handle the shaft seal by its outer edge only; a fingerprint or a speck of dust on the polished sealing face can cause a leak as soon as the pump is started.
Q: What causes a shaft seal to fail early?
Running the pump dry even briefly, sand or grit in the water, and simple age are the most common causes. A seal that fails within weeks of installation usually points to a face that got contaminated during assembly.
Not sure this is the right part? Send us a Picture of the Pump Plate on your pump and the CLR Marine team will confirm the correct shaft seal.
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