357872 | Pentair IntelliFlo3 Pump Seal Kit

The Pentair 357872 IntelliFlo3 Pump Seal Kit is designed to restore proper sealing performance in Pentair IntelliFlo3 variable speed pool pumps by replacing critical wear components that protect the motor from water intrusion. This kit includes the necessary shaft seal and related sealing elements to maintain a tight, leak-resistant barrier between the wet end and motor assembly. Built to match original dimensions and materials, the components are engineered to handle high-speed operation, pressure changes, and continuous exposure to treated pool water. Ideal for routine service or leak-related repairs, this seal kit helps extend pump life while maintaining efficient, reliable operation.

Highlights

• Pump Shaft Seal Solution: Replaces worn sealing components that prevent water from reaching the motor assembly.

• Designed for IntelliFlo3 Pumps: Engineered specifically for Pentair IntelliFlo3 variable speed pump models to ensure proper fit and performance.

• Leak Prevention Protection: Helps stop drips and moisture intrusion that can lead to motor damage or premature pump failure.

• Chemical-Resistant Materials: Built to withstand chlorine, saltwater systems, pressure, and high-speed pump operation.

• Essential Maintenance Kit: Ideal for servicing pumps showing signs of seal wear, leakage, or reduced reliability.

Includes

• (1) seal plate o-ring 356173Z
• (1) Shaft Seal Assembly 356210S
• (1) Diffuser O-Ring 356190Z
• (1) strainer pot lid o-ring 356189Z
• (2) Drain Plug O-Rings 192115Z

Compatibility

• Pentair Intelliflo3 VSF Variable Speed and Flow Pumps
• Pentair IntelliPro3 VSF Variable Speed and Flow Pumps

Additional Info

The Pentair 357872 IntelliFlo3 Pump Seal Kit is used to restore sealing between the wet end and motor on Pentair IntelliFlo3 variable speed pumps. This section helps Discount Pool Mart walk-in customers identify seal-related leaks, confirm IntelliFlo3 compatibility, and prepare for service before picking up the kit in store. These FAQs focus on leak symptoms, installation planning, and practical maintenance questions.

Compatibility and Pump Matching

Walk-in customers often ask how to confirm the correct seal kit.

How do I know the 357872 seal kit fits my IntelliFlo3 pump?

If your pump is an IntelliFlo3 model and you are servicing the shaft seal area between the motor and wet end, this kit is the correct match. Bringing photos of the pump label or seal area to Discount Pool Mart helps verify compatibility.

Will this seal kit work on older IntelliFlo or IntelliFlo VS pumps?

No, this kit is designed specifically for IntelliFlo3 pumps, which use a different seal design than earlier generations.

Can a worn shaft seal cause visible water leaks?

Yes, seal wear often shows up as dripping between the motor and pump housing, especially while the pump is running.

Installation and Troubleshooting

These questions help customers understand when and why seals should be replaced.

What symptoms indicate the pump seal needs replacement?

Water leaking under the motor, corrosion marks, or repeated breaker trips caused by moisture intrusion are common indicators.

Why is replacing the seal important even if the pump still runs?

A leaking seal allows water to reach the motor bearings and electronics, which can cause costly damage if ignored.

Does high-speed operation accelerate seal wear?

Yes, IntelliFlo3 pumps operate at higher RPM ranges, which increases heat and pressure at the seal surface over time.

In-Store Pickup and Local Guidance

These FAQs help customers prepare before visiting Discount Pool Mart.

Should I bring the old seal or motor assembly to the store?

Many walk-in customers bring photos or the old seal to ensure proper matching.

Is this seal kit usually available for same-day pickup?

It is commonly stocked, though checking availability before visiting is recommended.

Do customers often replace other parts during seal service?

Yes, impellers, O-rings, and gaskets are often inspected or replaced at the same time.