Sta-Rite 37400-0027S Shaft Seal
The Sta-Rite 37400-0027S is a replacement shaft seal. This is the part that keeps water on the wet side of the pump from tracking back along the motor shaft into the motor itself, and it is the single most common reason a pump gets opened up for service.
Shaft seals wear from normal use, from a pump that has been run dry even briefly, and from grit in the water that gets between the two faces. Handle the sealing faces by their edges only during installation, since a fingerprint or a speck of grit on the polished face can cause a leak from day one.
Key Features
- Genuine-fit Sta-Rite 37400-0027S 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: 37400-0027S
- Part Type: Shaft seal
- Quantity Per Pump: 1
- Condition: New
Frequently Asked Questions
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.
Q: Should I replace the impeller when I replace this seal?
Not always, but inspect it while the pump is open, since the two parts often wear under the same conditions.
Q: Will this fit a different pump in the same series?
Match the exact part number on the old seal rather than assuming similar-looking pumps share the same size.
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.
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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