O-ring for Seal Bracket for Booster Pump
Product Overview
A proven choice for maintaining a watertight seal on Pentair booster pumps during routine motor or seal plate service.
The Pentair LA415 is the standard specification for sealing the bracket on high-pressure booster pumps. Unlike generic rubber rings that may swell or degrade prematurely, this genuine Pentair component is engineered to withstand the specific pressure cycles and chemical exposure found in pressure-side cleaner systems. In our experience, using the exact LA415 replacement ensures a precise fit that prevents the slow drips that often lead to motor bearing failure.
Benefits & What Makes It Different
Genuine Pentair Specification
Using the LA415 ensures the exact thickness and diameter required to seat the seal bracket without over-compressing the material.
Chemical-Resistant Elastomer
Formulated to resist degradation from chlorine, bromine, and salt, maintaining its elasticity over multiple seasons of operation.
Pressure-Rated Sealing
Specifically designed to handle the high-pressure environment of a booster pump, preventing leaks that can damage the pump motor.
Compatibility
- Pentair Booster Pumps
- Polaris PB4-60 Booster Pumps
- Silicone-based pool lubricants
When To Use This
Pro Tip
Always inspect the groove in the seal bracket for calcium buildup or debris before installing the LA415; even a tiny grain of sand can prevent a perfect seal and cause a persistent drip.
Common Questions & Instructions
How do I know if my Pentair booster pump needs a new LA415 O-ring?
If you notice water dripping from the bottom of the pump where the motor meets the wet end, the LA415 O-ring or the shaft seal has likely failed and requires immediate replacement to protect the motor.
Can I use a generic O-ring from a hardware store instead of the LA415?
While generic rings may look similar, the LA415 is manufactured to specific tolerances; hardware store rubber often lacks the chemical resistance needed for pool water, leading to rapid swelling and leaks.
Do I need to use lubricant when installing the Pentair LA415 O-ring?
Yes, pool technicians always apply a thin layer of silicone-based lubricant to the LA415 to ensure it seats properly and doesn't pinch or tear during the reassembly of the seal bracket.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
