Polaris R0747800 PB4SQ Mechanical Seal – Genuine Pump Seal Replacement

OEM Mechanical Seal for Polaris PB4SQ Booster Pumps

Protect your Polaris booster pump from costly leaks and performance failures with the Polaris R0747800 PB4SQ Mechanical Seal—an original equipment manufacturer (OEM) replacement part engineered specifically for the PB4SQ booster pump. This high-quality mechanical seal is an essential component for ensuring a water-tight, pressurized pump system, making it a must-have in your Polaris pool parts inventory.

Seal In Performance, Seal Out Problems

A worn or cracked pump seal is one of the most common causes of water leakage and pump damage. The R0747800 mechanical seal restores your booster pump’s integrity by creating a secure, leak-proof barrier between the motor shaft and the pump housing. Its dual-material design—featuring premium rubber and ceramic contact surfaces—ensures smooth rotation while blocking water infiltration.

This Polaris pool part is designed for durability under harsh pool conditions, including chlorinated water and fluctuating temperatures. Whether you’re performing preventative maintenance or replacing a failed component, this seal ensures your Polaris PB4SQ booster pump performs at its best.

Why This OEM Polaris Pool Part Matters

Unlike generic seals that can lead to improper fitment, noise, or premature failure, the Polaris R0747800 is manufactured to exact specifications for PB4SQ pumps. OEM parts like this one not only guarantee performance—they protect your investment by avoiding costly future damage to your pool equipment.

Key Features

• OEM part for Polaris PB4SQ booster pumps

• Prevents leaks and water intrusion – Vital for pump longevity

• Durable construction – Withstands high pressure and chemical exposure

• Easy replacement – Direct fit means no modifications needed

• Extends pump life – Reduces internal corrosion and motor damage

• Essential Polaris pool part – Keep one on hand for seasonal maintenance

Installation Notes

Replacing the mechanical seal typically requires disassembling the pump housing. This task can be performed by experienced DIY pool owners or professional technicians. Be sure to inspect the impeller and diffuser during replacement for signs of wear to ensure full system integrity.

Ideal For

• Pool owners maintaining Polaris PB4SQ booster pumps

• Pool service technicians doing seasonal pump rebuilds

• DIY homeowners replacing leaky or degraded seals

• Customers seeking genuine Polaris pool parts for quality assurance

Maintenance Tip

If your pump shows signs of leaking near the motor shaft, has difficulty priming, or you notice unusual noises, the mechanical seal may be compromised. Replacing it promptly prevents further damage and restores efficient operation.