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US Seal Pump Seal PS-201V-CMS - Bubbles Supply

US Seal Pump Seal PS-201V-CMS

Part #: PS-201V-CMS

$32.29
In stock — ships today
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Also replaces

PS-851
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this seal/gasket

The US Seal PS-201V-CMS is a precision-engineered pump seal designed for hot tub and spa pumps with 3/4" shafts. This OEM-quality replacement seal serves as a direct substitute for PS-851, ensuring proper sealing between your pump's wet end and motor to prevent costly water leaks and motor damage.

Manufactured by US Seal to exact OEM specifications, this pump seal delivers reliable performance and long-lasting durability. At Bubbles Supply, we guarantee an exact fit for your spa pump and offer same-day shipping on in-stock items, plus our comprehensive 1-year warranty for complete peace of mind. Proper installation requires draining the spa and disconnecting power - always verify your pump's shaft diameter before ordering to ensure compatibility.

Exact part number

PS-201V-CMS

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 3/4 inch shaft pump seal
  • PS-851
  • PS-851 replacement
  • spa pump mechanical 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 the pump seal area
  • Wet end dripping onto motor housing
  • Visible mineral deposits or corrosion around pump shaft
  • Motor damage caused by persistent seal leak
  • Pump running but weeping water at shaft

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

Before you buy — quick checklist

  • Confirm your pump shaft diameter is 3/4 inch before ordering — this seal is not compatible with 5/8 inch shaft pumps
  • Identify your existing seal part number (often stamped on the ceramic face or rubber cup) and verify PS-851 is the correct replacement
  • Inspect the pump's shaft and seal seat for scoring or corrosion — a damaged shaft surface will cause the new seal to fail prematurely
  • Check the wet end for cracks or warping while the pump is disassembled
  • Have replacement O-rings on hand for the wet end volute in case they are worn

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

Install difficulty: Medium — Some experience neededTypically 45–90 minutes

Warranty

1 year 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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