🚀 New launch promo — 10% off orders over $300. Use code LAUNCH10
Bubbles Supply
Not sure which part you need? Upload a photo and we'll find it. →
2" ID x 2-15/16" OD Heater Gasket 711-4010 - Bubbles Supply

2" ID x 2-15/16" OD Heater Gasket 711-4010

Part #: 711-4010

$1.42
In stock — ships today
Qty
🔒 Secure checkout↩️ 30-day returns✅ 1-year warranty
Add to B2B order list

Not sure this fits?

Send us a photo of your old part — we'll confirm the right replacement before you order.

Upload a Photo
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this seal/gasket

The Waterway 2" ID x 2-15/16" OD Heater Gasket (part #711-4010) is an essential flat gasket designed for heater unions in spas equipped with Waterway heating systems. This OEM replacement gasket creates a watertight seal between heater union connections, preventing leaks that can damage your spa's heating components and surrounding equipment.

Manufactured to Waterway's exact specifications with a 2-inch inner diameter and 2-15/16" outer diameter, this gasket ensures proper fitment and reliable performance. At Bubbles Supply, we guarantee an exact fit for your heater assembly and back every gasket with our 1-year warranty. Most orders ship the same day for minimal downtime. Before installation, inspect the union surfaces for debris or damage, and hand-tighten connections to avoid over-compression that could compromise the gasket seal.

Exact part number

711-4010

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 2-inch heater union seal
  • flat heater gasket
  • Heater union gasket
  • union face gasket

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

Technical specifications

Union size
2 inch heater unions

Plumbing notes

  • Union size: 2 inch heater unions

Need help measuring? Email hello@bubblessupply.com with a photo of your existing plumbing.

Common symptoms this part fixes

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

  • Water leaking at heater union connection
  • Damp or wet heater housing area
  • Slow drip at union fitting causing mineral buildup
  • Pool of water beneath spa heater assembly
  • OH or HH error codes triggered by water intrusion near heater sensors

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

Before you buy — quick checklist

  • Measure your existing gasket's inner and outer diameter — confirm 2" ID x 2-15/16" OD before ordering
  • Verify your spa uses Waterway heater unions with a flat-face sealing surface, not an O-ring groove
  • Inspect union threads and mating faces for cracks or pitting — a new gasket won't seal against a damaged union face
  • Check whether leaking is at the union joint itself or at a different fitting — this gasket only addresses flat-face union seals
  • Have union wrench or channel-lock pliers on hand 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.

🔒 Secure checkout · SSL encrypted·🇺🇸🇨🇦 Serving the US and Canada·↩️ 30-day hassle-free returns·📦 Same-day fulfillment