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Pump Seal PS-2131 - Bubbles Supply

Pump Seal PS-2131

Part #: PS-2131

$14.66
In stock — ships today
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🔒 Secure checkout↩️ 30-day returns✅ 1-year warranty
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this seal/gasket

The US Seal PS-2131 pump seal is a precision-engineered replacement component designed for spa circulation and jet pumps with 5/8" shafts. This OEM-quality seal features a 1.218" outer diameter and includes a durable Lexan cup for enhanced sealing performance. Compatible with various spa pump models, this seal prevents water leakage between the pump's wet end and motor assembly, ensuring optimal pump operation and preventing costly damage.

At Bubbles Supply, we guarantee this PS-2131 seal provides an exact fit for your spa pump, backed by our comprehensive 1-year warranty and same-day shipping on in-stock items. The Lexan cup construction offers superior durability and chemical resistance compared to standard ceramic materials, extending service life in spa environments. Always verify your pump's shaft diameter and seal specifications before installation, and consider replacing both the seal and O-ring simultaneously for best results.

Exact part number

PS-2131

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Also known as / Replaces

This part replaces or is interchangeable with:

  • mechanical seal
  • pump face seal
  • shaft seal
  • wet end 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 from pump shaft area
  • Wet end leaking onto motor housing
  • Visible drip or seepage at pump body-to-motor joint
  • Burnt motor smell caused by water intrusion
  • Pump losing prime due to seal failure

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

Before you buy — quick checklist

  • Confirm your pump shaft diameter is 5/8" — this seal will not fit 1/2" or 3/4" shaft pumps
  • Verify the seal outer diameter requirement is 1.218" by checking your pump's service manual or existing seal
  • Inspect the impeller and diffuser for damage before ordering — a failed seal can indicate a deeper wet end problem
  • Plan to replace the shaft seal and pump body o-ring at the same time to avoid a second teardown
  • Note your pump brand and model number before ordering to cross-reference fitment

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Medium — Some experience neededTypically 45-90 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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