Pentair IntelliFlo3 1.5HP Seal Kit | 357871

Pentair 357871 Seal Kit for IntelliFlo3 / IntelliPro3 VSF 1.5 HP Pumps

The Pentair 357871 is an OEM seal kit used to refresh the primary sealing components inside compatible Pentair IntelliFlo3 VSF and IntelliPro3 VSF 1.5 HP pump wet ends. It is commonly used during a wet-end rebuild to help stop leaks, restore proper sealing, and protect the motor from water intrusion.

Key Details

• Manufacturer: Pentair
• Part Number: 357871
• Product Type: Pump seal kit (wet-end seal and O-ring set)
• For Use With: IntelliFlo3 VSF / IntelliPro3 VSF 1.5 HP pump models (commonly referenced as 011065, 011066, 011067, 011068)

What This Kit Replaces

• Primary pump shaft/mechanical seal components to prevent water from leaking along the motor shaft
• Common wet-end O-rings used at the lid and internal sealing points (such as diffuser/impeller area), depending on pump configuration

When to Use This Kit

• Water dripping from the pump seam or beneath the motor (seal leak)
• Air bubbles in the pump basket that persist after cleaning/lubricating the lid O-ring
• Wet-end disassembly for service (impeller/diffuser work) where seals should be renewed
• After any prolonged leak to help protect the motor bearings and electronics

Installation Notes

• Disconnect power at the breaker and relieve system pressure before opening the pump.
• Clean and inspect sealing surfaces; replace any cracked housings, lids, or diffusers that could cause repeat leaks.
• Handle seal faces carefully and keep them clean during installation to prevent premature failure.
• Lightly lubricate O-rings with pool-safe silicone lubricant (do not lubricate the polished seal faces).
• After reassembly, prime the pump fully and verify there are no leaks before returning to normal operation.

Related Products (Aqua Pool Supply)

• Pentair IntelliFlo3 replacement parts
• Pentair IntelliPro3 replacement parts
• Seal kit for IntelliFlo3 / IntelliPro3 3.0 HP (357872)
• IntelliFlo3 lid O-rings
• IntelliFlo3 diffusers
• IntelliFlo3 impellers

Maintenance Tip

Small suction-side air leaks and worn lid O-rings often mimic seal issues. Keep the lid O-ring clean and lightly lubricated, maintain proper water level, and address drips promptly to prevent damage to the motor and drive components.