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Union Nut UNUT-56WUA500 - Bubbles Supply

Union Nut UNUT-56WUA500

Part #: UNUT-56WUA500

$5.67
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this union/fitting

The LX Union Nut UNUT-56WUA500 is an essential plumbing component designed for LX spa systems requiring reliable pipe connections. This OEM replacement part ensures watertight seals between plumbing fittings, preventing leaks that can damage your spa's internal components and compromise water circulation.

Built to LX's original equipment specifications, this union nut delivers the exact fit guaranteed you need for professional-grade repairs. Bubbles Supply stocks authentic LX parts with same-day shipping and backs every purchase with our comprehensive 1-year warranty. Whether you're replacing a worn union nut or upgrading your spa's plumbing system, this genuine component restores optimal performance and reliability. Always verify compatibility with your specific LX spa model and existing plumbing configuration before installation to ensure proper threading and seal integrity.

Exact part number

UNUT-56WUA500

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • LX union nut
  • plumbing union collar nut
  • pump union nut

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 union connection
  • Dripping at plumbing fitting during operation
  • Union nut cracked or stripped threads
  • Union nut will not tighten or hold seal
  • Slow leak causing water loss over time

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

Before you buy — quick checklist

  • Confirm your existing union nut SKU or part number from the original LX component
  • Inspect thread pitch and diameter of your current union nut before ordering — do not assume all LX union nuts are interchangeable
  • Check the condition of the union body and o-ring seat — a new nut won't fix a cracked union body or damaged o-ring groove
  • Verify whether your leak originates at the union nut itself versus the o-ring or union body, as those are separate parts
  • Note whether your plumbing is 1.5 inch or 2 inch — confirm this nut matches your line size

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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