Pentair WhisperFloXF Seal Plate and Seal Kit 400031Z

Pentair SKU: 400031Z
IntelliFloXF VS (After August 2015) Not sure it fits? See this part on the interactive diagrams IntelliFloXF VS (After August 2015)WhisperFloXF Pump

Pentair WhisperFloXF Seal Plate and Seal Kit 400031Z

Pentair SKU: 400031Z
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Questions about returns? View our return policy.
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Pentair 400031Z Seal Plate Kit with Mechanical Seal

The Pentair 400031Z is a genuine replacement seal plate kit with mechanical seal for select Pentair XF Series pool pumps. This kit is used in the pump wet end and helps create the proper seal between the motor side and hydraulic side of the pump, helping prevent water leaks and maintain reliable pump performance.

Product Features

  • Genuine Pentair replacement part
  • Part number: 400031Z
  • Seal plate kit with mechanical seal
  • Designed for select Pentair XF Series pump applications
  • Helps prevent leaks at the pump seal plate area
  • Commonly replaced during shaft seal, impeller, diffuser, or wet-end service

Common Compatibility

  • Pentair IntelliFloXF variable speed pumps
  • Pentair IntelliFloXF pumps manufactured before and after August 2015
  • Pentair WhisperFloXF pumps
  • Select Pentair XF Series pump wet-end assemblies

When to Replace

Replace the seal plate kit if the pump is leaking near the motor side of the wet end, the existing seal plate is cracked or warped, or the mechanical seal has failed. This part is also commonly replaced during major pump service when the wet end is already disassembled.

Installation Tips

  • Turn off power to the pump at the breaker before servicing.
  • Relieve system pressure and close valves before opening the pump.
  • Inspect the impeller, diffuser, seal plate O-ring, and related hardware while the pump is apart.
  • Install the mechanical seal carefully and avoid touching the polished seal faces with bare hands.
  • Replace worn O-rings and gaskets during reassembly to help prevent repeat leaks.
  • Confirm pump model and parts diagram before ordering or installing replacement parts.

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Maintenance Tips

Whenever the pump wet end is opened, inspect all seals, O-rings, and hardware before reassembly. Replacing worn sealing components during the same repair can help prevent leaks, priming issues, and repeat disassembly. Use only pool-safe silicone lubricant on O-rings and avoid petroleum-based lubricants.

Questions about returns? View our return policy.

Hours Of Operation:

Monday - Friday: 7:00 am to 5:00 pm Phoenix Time

Saturday: 8:00 am to 2:00 pm

Sunday: Closed

  • We do not ship on Saturday or Sunday.
  • Orders totaling more than $300 will require signature confirmation upon delivery.
  • We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
  • Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
  • Expedited shipping options are available at checkout.

Return Policy:

  • Products that are received damaged will receive a refund in store credit.
  • Most products are eligible for return within 30 days of receipt, except where noted below.
  • To initiate a return, please complete an RMA form prior to sending your item back.
  • Original shipping costs are non-refundable and will be deducted from the return credit.
  • Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
  • Some returns will be charged an automatic 15% restocking fee.
  • We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
  • Please complete the return form to receive your RMA number and return shipping label.
  • Chemical products are not eligible for return under any circumstances.
  • The Pentair Colorsync 618031 is not eligible for return.
  • Pool cleaners are not eligible for return.
  • Opened seals and o-rings are not eligible for return.
  • Capacitors are not eligible for return.
  • Plastic popup tools are not eligible for return.
  • Automation components and circuit boards are not eligible for return.
  • If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
  • Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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