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Installation & Maintenance Tips
and covers the pool surface
Once engaged
Air relief components are exposed to constant pressure changes
clog filters
Polaris R0747800 OEM PB4SQ Mechanical Seal Lewis check pricing Installation & Maintenance TipsKey Fit OEM Polaris Mechanical Seal (R0747800) Genuine Polaris replacement seal engineered for leak prevention Compatible Pump Model Designed specifically for the Polaris PB4SQ booster pump Prevents Shaft Leakage Seals the motor shaft area to stop water from entering the motor and bearing assembly Protects Pump Motor Prevents water damage that can lead to motor failure and electrical issues Required During Motor Replacement Always replaced when
