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4" ID x 4-3/8" OD Heater O-Ring 60-0001 - Bubbles Supply

4" ID x 4-3/8" OD Heater O-Ring 60-0001

Part #: 60-0001

$1.27
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 Brett Aqualine 4" ID x 4-3/8" OD heater O-ring (part #60-0001) creates a watertight seal between your spa heater housing and heating element. With its precise 3/16" cross section, this OEM replacement O-ring fits most standard 4-inch spa heaters, preventing costly water leaks and maintaining proper heating efficiency.

Built to exact OEM specifications, this heater O-ring is guaranteed to fit your spa perfectly or we'll make it right. We ship same-day from our Canadian warehouse and back every part with a full 1-year warranty for complete peace of mind. When installing, ensure the heater housing and element surfaces are clean and free of debris, and apply a thin coat of silicone lubricant to the O-ring for easier installation and optimal sealing.

Exact part number

60-0001

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 4-inch heater O-ring
  • heater element O-ring
  • heater housing gasket
  • spa heater seal

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 around the heater housing
  • Wet equipment bay with no obvious source
  • Heater losing pressure and shutting down on flow switch
  • Visible water weeping from heater element seating area
  • Heater cycling off due to low-flow faults caused by a pressure leak

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

Before you buy — quick checklist

  • Measure your existing O-ring's inner diameter (ID) and outer diameter (OD) — this part is 4" ID x 4-3/8" OD with a 3/16" cross section
  • Confirm your heater housing accepts a 4-inch element before ordering
  • Inspect the heater housing groove for cracks, corrosion, or damage — a bad seat will cause the new O-ring to fail
  • Have silicone-based lubricant on hand before installation — never use petroleum-based grease on rubber O-rings
  • Drain the spa and isolate the heater before attempting replacement

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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