Speck 2920341220 casing o-ring for Model 433 pool pumpSpeck O-Ring for Model 433 Pool Pump Casing, 2920341220 In stock$1420
Speck 2920341220 casing o-ring for Model 433 pool pump
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Speck O-Ring for Model 433 Pool Pump Casing, 2920341220

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$1420
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Quick overview

  • Seals the pump casing This is the ring at the split in the housing, the joint that has to hold suction as well as pressure.
  • Measured size 215 mm by 6 mm, so it can be checked against the ring you have out.
  • Genuine Speck Factory part number 2920341220.
  • Also listed with the E91 The source files this ring under both the Model 433 and the Model E91 pump parts, so verify against your pump.
  • Replace it when the pump is open Once the casing is split, the old ring rarely reseats reliably, so it is a routine part of the job.
  • Use silicone lube Dress the new ring with a silicone based lubricant, petroleum grease swells and degrades rubber.
Full description and specifications ↓

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Product details

The Speck 2920341220 is the casing o-ring for the Model 433 pool pump, measuring 215 mm by 6 mm. It is the genuine Speck part.

Where it sits

The casing o-ring seals the split in the pump housing. That joint has to hold on both sides of the impeller, against suction on the way in and pressure on the way out, so a ring that has hardened or taken a set shows up as air pulled into the system or as water weeping from the seam. Neither symptom improves on its own.

Ordering and fitting

Check the measurement, 215 mm by 6 mm, against the ring you have out. The source lists this same part under both the Model 433 and the Model E91 pump breakdowns, so verify the number against your own pump rather than going by model name alone. Clean the groove, dress the new ring with a silicone based lubricant, and draw the casing bolts down evenly.

Specifications
Brand Speck
Manufacturer part number 2920341220
Type Pump casing o-ring
Size 215 mm x 6 mm
Fits Speck Model 433 pool pump
Also listed under Speck Model E91 pump parts
Shipping weight 0.06 lb
Ships Parcel

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Questions and answers

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

What size is this o-ring?
215 mm by 6 mm.
Which pump is it for?
The Speck Model 433 pool pump casing. The source also files the same ring under Model E91 pump parts, so compare the part number and the measurement against what you have before ordering.
Do I need to replace it when I open the pump?
It is good practice. A casing o-ring that has been compressed for years takes a set, and reusing it is the common cause of a housing that weeps after a rebuild.
Should it be greased?
Yes, with a silicone based o-ring lubricant. Petroleum grease makes the rubber swell and shortens its life.
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