Pentair Challenger SuperFlo VS Pump Shaft Seal Set | 354545S
Pentair
SKU: PEN354545S
Pentair 354545S Mechanical Shaft Seal Assembly – 5/8″ Shaft
Part # 354545S — a genuine Pentair mechanical shaft seal designed for pool and spa pumps using a 5/8″ motor shaft. This seal restores the watertight barrier between the pump motor and the wet end, preventing leakage, maintaining prime, and protecting the motor from moisture damage.
Key Features
- Engineered for pumps requiring a 5/8″ (0.625″) shaft mechanical seal.
- Includes both the rotating mechanical face and stationary ceramic seat.
- Constructed from durable, chemical-resistant materials suitable for harsh pool water environments.
- Direct replacement for many Pentair and Sta-Rite pumps, including Challenger High Flow, Challenger High Pressure, SuperFlo, SuperFlo VS, OptiFlo, Dynamo, Pinnacle, and others using this shaft size.
- Restores proper sealing to prevent leaks and extend pump service life.
Typical Applications
This seal is used when a pump begins leaking at the shaft area, loses prime, draws air, or when performing routine pump service. It is ideal for both residential and commercial pool systems that require a 5/8″ mechanical shaft seal replacement.
Installation & Compatibility Notes
Turn off all power to the pump and relieve pressure before servicing. Remove the pump housing and impeller to access the old seal. Clean the shaft, impeller hub, and seal seat thoroughly. Install the new 354545S seal components in the correct orientation—ceramic seat in the housing, carbon face on the impeller. Reassemble the pump, prime the system, and inspect for leaks after startup.
Why Choose This Seal Assembly?
This genuine Pentair seal provides the proper fit, material quality, and reliability needed to maintain pump performance. Using the correct OEM-spec seal helps prevent water intrusion into the motor, reduces downtime, and extends the overall life of the pump.
Maintenance Tips
- Inspect the seal area regularly for moisture or mineral deposits—early signs of seal wear.
- Ensure the motor shaft sleeve is smooth and free from corrosion before installing a new seal.
- Use only silicone-based lubricant on O-rings; do not lubricate the seal faces.
- Drain the pump during winterizing to prevent freeze damage to the seal assembly.
Hours Of Operation:
Monday - Friday: 8:00 am to 4:00 pm Phoenix Time
Saturday and Sunday: Closed
- Orders costing more than $300 WILL be required to have signature confirmation upon delivery.
- Handling time is typically only 1 day.
- Any item ordered after 1pm Phoenix time, may not ship same-day.
- Call us if you require expedited shipping and we can give you quotes based on your needs.
Return Policy:
- All products, except as noted below, are eligible for return up to 30 days after receipt of item.
- For returns, an RMA form must be filled out HERE or customers can call for additional help.
- Shipping costs will be deducted from all returned items.
- Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in.
- Items broken, damaged, or inoperable due to installer error will not be refunded.
- Fill out the return form or give us a call to obtain an RMA and return shipping label.
- There are no returns on the Pentair Colorsync 618031
- No returns on pool cleaners.
- No returns on opened seals and o-rings.
- No returns on capacitors.
- If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
- All products denied upon arrival at customers house WILL be charged the cost to ship.
- Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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