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6-1/4" ID x 6-3/4" OD O-Ring 6500-545 - Bubbles Supply

6-1/4" ID x 6-3/4" OD O-Ring 6500-545

Part #: 6500-545

$6.90
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this seal/gasket

This OEM Jacuzzi pump housing O-ring (part #6500-545) provides a critical seal for Jacuzzi Pirahna, Theramax, and Theraflo pump systems. The 6-1/4" inner diameter and 6-3/4" outer diameter rubber gasket creates a watertight barrier between pump housing components, preventing costly leaks and maintaining proper hydraulic pressure for optimal spa performance.

Manufactured to Jacuzzi's exact specifications, this genuine replacement O-ring ensures an exact fit guaranteed for your pump assembly. We ship same-day from our Canadian warehouse and back every part with a full 1-year warranty for complete peace of mind. When replacing this seal, clean all mating surfaces thoroughly and apply a thin layer of silicone lubricant to ensure proper seating and prevent premature wear.

Exact part number

6500-545

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • housing gasket
  • pump body seal
  • Pump housing O-ring
  • pump volute gasket

Looking for an older part number? Check our supersession lookup tool

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • Water leaking at pump housing seam
  • Wet spot or pooling beneath the pump volute
  • Loss of prime due to air intrusion at housing joint
  • Visible weeping or seepage around pump body
  • Dropped flow or pressure from housing leak path

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy — quick checklist

  • Confirm your pump model is Pirahna, Theramax, or Theraflo before ordering
  • Measure your existing O-ring — verify 6-1/4" ID and 6-3/4" OD before purchasing
  • Inspect the O-ring groove and mating surfaces for cracking, scoring, or debris that may prevent a proper seal
  • Have silicone lubricant (not petroleum-based) on hand before disassembly — petroleum-based products will degrade the rubber
  • Check that the pump housing bolts or clamp ring are not the source of the leak before replacing the O-ring alone

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Easy — DIY-friendlyTypically 15–30 minutes

Warranty

1 year manufacturer warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee →

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers — no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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