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5-3/4" ID x 6" OD O-Ring 805-0256 - Bubbles Supply

5-3/4" ID x 6" OD O-Ring 805-0256

Part #: 805-0256

$8.48
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 genuine Waterway O-ring (part #805-0256) seals the pump volute on Hi-Flo main circulation pumps. Measuring 5-3/4" inner diameter by 6" outer diameter, this OEM replacement part restores proper sealing to prevent air leaks and maintain optimal pump performance in your spa system.

Manufactured to Waterway's exact specifications, this volute O-ring comes with our exact fit guarantee and ships same day from our Canadian warehouse. Built from durable rubber compound to withstand continuous exposure to spa chemicals and temperature fluctuations, it's backed by our 1-year warranty for reliable long-term service. Before installation, clean the volute groove thoroughly and apply a thin layer of silicone lubricant to ensure proper seating and prevent pinching during assembly.

Exact part number

805-0256

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • Hi-Flo volute seal
  • pump body O-ring
  • pump housing seal
  • Volute O-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:

  • Air bubbles entering the pump or circulation system
  • Water leaking from the pump volute seam
  • Loss of prime or pump losing suction
  • Reduced water flow due to air ingestion
  • Visible weeping or dripping at the pump body joint

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

Before you buy — quick checklist

  • Confirm your pump is a Waterway Hi-Flo series — this O-ring is not universal
  • Measure the O-ring groove ID and OD on your existing volute to confirm 5-3/4" x 6" fitment
  • Inspect the volute groove for cracks or damage — a damaged groove will cause the new O-ring to fail regardless
  • Check whether the leak is at the volute seam specifically, not at the union fittings or shaft seal, which require different parts
  • Have silicone lubricant on hand before starting — do not use petroleum-based lubricants on rubber O-rings

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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