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6" ID x 6-1/2" OD O-Ring 6500-290 - Bubbles Supply

6" ID x 6-1/2" OD O-Ring 6500-290

Part #: 6500-290

$1.76
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 6" ID x 6-1/2" OD O-Ring (part #6500-290) is a genuine OEM pump housing seal designed specifically for Sundance Spas systems. This critical rubber seal creates a watertight barrier between pump housing components, preventing leaks and maintaining proper water circulation in your spa.

Manufactured to Sundance's exact specifications, this premium O-ring features the precise 6-inch inner diameter and 6.5-inch outer diameter required for reliable performance. At Bubbles Supply, we guarantee an exact fit with our authentic OEM parts, backed by our comprehensive 1-year warranty and same-day shipping on in-stock items. When replacing pump housing O-rings, always clean the sealing surfaces thoroughly and apply a thin layer of silicone lubricant to ensure proper installation and prevent premature wear.

Exact part number

6500-290

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • housing gasket O-ring
  • pump housing O-ring
  • pump seal ring

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 from pump housing seam
  • Wet spot or puddle forming under the pump
  • Loss of prime due to air ingestion at housing joint
  • Visible weeping or seepage around pump body
  • Spa losing water with no obvious plumbing leak

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

Before you buy — quick checklist

  • Measure your existing O-ring — confirm 6" ID and 6.5" OD before ordering
  • Inspect the O-ring groove for corrosion, cracks, or debris that could cause the new seal to fail
  • Confirm your pump housing is a Sundance OEM unit — aftermarket housings may use different tolerances
  • Have silicone-based O-ring lubricant on hand before starting the job — do not use petroleum-based grease
  • Shut off power at the breaker and drain the spa before disassembly

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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