Speck 2920343310 complete mechanical shaft seal for 21-80 BS pool pumpSpeck Complete Mechanical Shaft Seal for 21-80 BS Pool Pump, 2920343310 In stock$7099
Speck 2920343310 complete mechanical shaft seal for 21-80 BS pool pump
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Speck Complete Mechanical Shaft Seal for 21-80 BS Pool Pump, 2920343310

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$7099
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Quick overview

  • Complete seal Both halves of the mechanical seal come together, so the rotating face and the seated face are replaced as a matched pair.
  • Speck 2920343310 The factory part number for the 21-80 BS shaft seal.
  • 20 mm The seal size, which is the number to check against the shaft on the pump you are working on.
  • Stops a shaft leak Water dripping between the pump body and the motor is a failed shaft seal, and this is the part that fixes it.
  • Protects the motor Water that gets past a worn seal runs straight at the motor bearings, which is the expensive failure that follows.
  • Pump part Sold as a service part for Speck pumps, not as an assembly.
Full description and specifications ↓

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Product details

Speck part 2920343310 is the complete mechanical shaft seal for the 21-80 BS pool pump, in the 20 mm size.

Why complete matters

A mechanical seal works as two faces pressed together, one turning with the shaft and one held in the pump body. They wear as a pair. Fitting a new face against an old one leaves the same leak, which is why this part supplies both halves.

When to change it

Water appearing at the joint between the pump body and the motor means the shaft seal has gone. It is worth acting quickly, because the water that gets past a failed seal runs directly at the motor bearings and takes the motor with it.

Specifications
Brand Speck
Manufacturer part number 2920343310
Type Complete mechanical shaft seal
Size 20 mm
Part type Pool pump part
Fits Speck 21-80 BS pool pump
Shipping weight 0.1 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

What does complete mean here?
A mechanical seal has two halves that run against each other. Complete means you get both, so the worn faces are replaced as a pair rather than mixing an old face with a new one.
Which pump does it fit?
It is listed as the complete mechanical shaft seal for the Speck 21-80 BS pool pump.
What size is the seal?
20 mm. Check that against the pump shaft before ordering, since seal size is what decides the fit.
How do I know the shaft seal has failed?
Water dripping or running from the joint between the pump body and the motor is the usual sign. Ignore it and the water reaches the motor bearings, which turns a seal job into a motor replacement.
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