Product Overview
The Pentair C/EQ Series Shaft Seal 071725S is a genuine replacement shaft seal designed for select Pentair C Series and EQ Series commercial pool pumps. The shaft seal helps prevent water from leaking along the motor shaft, protecting the pump motor and maintaining proper pump performance.
If your pump is leaking between the seal plate and motor area, or if you are replacing the motor, this shaft seal is an important replacement part to install at the same time.
Ideal For
- Pentair C Series pumps
- Pentair EQ Series pumps
- Commercial pool pump repairs
- Motor replacement jobs
- Leak repairs around the pump shaft or seal plate
- Preventative maintenance during pump rebuilds
Key Features
- Genuine Pentair replacement part
- Part number: 071725S
- Designed for select C/EQ Series pumps
- Helps prevent water from reaching the pump motor
- Recommended when replacing the pump motor
- Built for reliable sealing performance in demanding pool environments
- Helps restore proper pump operation and reduce leak-related damage
Benefits
Replacing a worn or leaking shaft seal can help protect your pump motor from water damage and extend the life of your equipment. This seal is especially important during motor replacement, since reusing an old shaft seal can often lead to leaks after installation.
The Pentair 071725S shaft seal is made to fit compatible Pentair pump models, giving service technicians and pool owners a dependable repair solution for C/EQ Series pump systems.
Compatibility
This shaft seal is made for select Pentair C Series and EQ Series pumps.
Before ordering, confirm your pump model or existing part number to ensure proper fitment. If your pump has been rebuilt or modified, check the pump’s parts diagram or service manual before installation.
When to Replace Your Shaft Seal
You may need to replace the shaft seal if you notice:
- Water leaking between the pump motor and wet end
- Dripping from the seal plate area
- Motor bearing noise caused by previous water exposure
- A failed or worn pump seal during motor replacement
- Signs of corrosion near the motor shaft
For best results, shaft seals should typically be replaced whenever the motor is removed or replaced.
Installation Notes
Professional installation is recommended. Always shut off power to the pump before servicing. The seal surfaces should be handled carefully and kept clean during installation. Avoid touching the polished ceramic or carbon faces directly, as oils or dirt can affect sealing performance.
Customer-Facing Q&A
Q: What is the Pentair 071725S used for?
A: It is a replacement shaft seal used on select Pentair C Series and EQ Series pool pumps to help prevent leaks around the motor shaft.
Q: Should I replace the shaft seal when replacing the pump motor?
A: Yes. It is strongly recommended to replace the shaft seal whenever the motor is replaced or removed.
Q: What are signs that my shaft seal is bad?
A: Common signs include water leaking between the motor and pump housing, dripping near the seal plate, or corrosion around the motor shaft area.
Q: Is this an aftermarket part?
A: No. This listing is for the Pentair 071725S shaft seal.
Q: Will this fit all Pentair pumps?
A: No. This seal is intended for select Pentair C/EQ Series pumps. Always verify compatibility before ordering.