A leaking pool pump is rarely just a nuisance—it’s often an early warning sign of internal damage. The US Seal PS-1000 Motor Shaft Seal is a high-performance replacement seal designed to prevent water from traveling along the motor shaft and damaging pump bearings, windings, and internal components.

Installed between the pump housing and motor, the shaft seal creates a watertight barrier while allowing the motor shaft to rotate freely at operating speed. When the seal wears or fails, water begins to leak toward the motor, often leading to bearing failure, corrosion, electrical damage, and complete motor loss if left unaddressed.

The PS-1000 is one of the most widely used pool pump shaft seals in the industry due to its broad compatibility and reliable performance. It is commonly used as a replacement seal in many Pentair®, Hayward®, Sta-Rite®, Jacuzzi®, and other standard pool pump models. For routine pump rebuilds, motor replacements, or leak repairs, this seal is an essential service part.

Why the Motor Shaft Seal Is So Important

The motor shaft seal is the only component preventing pressurized pool water from reaching the motor. When it fails, damage can escalate quickly and expensively.

A worn or compromised shaft seal can cause:

• Water leakage between the pump and motor

• Bearing noise or motor seizure

• Electrical failure or corrosion

• Premature motor replacement

Replacing a leaking shaft seal early is one of the most cost-effective repairs you can make on a pool pump. In many cases, a simple seal replacement prevents the need for a full motor or pump replacement.

Designed for Broad Pool Pump Compatibility

The US Seal PS-1000 is engineered as a general-purpose, high-performance shaft seal used across a wide range of common pool pumps. Its dimensions and materials make it suitable for many standard residential pool pump applications.

Because shaft seals are matched to pump and motor interfaces—not brand names—technicians rely on proven models like the PS-1000 for dependable fit and function across multiple pump lines. This makes it a staple part for service professionals and DIY repairs alike.

Always confirm compatibility with your specific pump model before installation.

High-Performance Seal Construction

The PS-1000 uses durable, pool-grade sealing surfaces designed to withstand constant rotation, water pressure, and chemical exposure. Properly installed, the seal maintains consistent contact between its stationary and rotating faces, preventing leaks while minimizing friction and heat buildup.

Compared to worn or low-quality seals, a high-performance replacement like the PS-1000 helps ensure long service life and stable pump operation.

Common Signs a Shaft Seal Needs Replacement

Shaft seals typically fail gradually, but the warning signs are consistent. Any visible water leaking from the motor flange area should be addressed immediately.

Common indicators include water dripping under the pump, rust or corrosion near the motor base, or unexplained motor bearing noise. Anytime a motor is replaced or removed, the shaft seal should always be replaced—reusing an old seal almost guarantees future leakage.

Ideal for Repairs and Preventive Maintenance

The US Seal PS-1000 is commonly used during:

• Pump leak repairs

• Motor replacements

• Full pump rebuilds

• Preventive maintenance on aging equipment

Replacing the shaft seal during service protects the new motor and extends the overall life of the pump system.

Installation Overview

Installation of the PS-1000 requires separating the motor from the pump housing and removing the old seal from the seal plate and impeller. Care must be taken to install the new seal without touching the sealing faces and to ensure correct orientation.

Proper installation is critical. Incorrect handling, contamination, or misalignment can cause premature seal failure. Professional installation is recommended if you are unfamiliar with pump disassembly.

Why Using the Correct Shaft Seal Matters

• Prevents water intrusion into the motor

• Protects motor bearings and electrical components

• Stops leaks at the pump-to-motor interface

• Extends pump and motor service life

• Reduces costly equipment replacement

A shaft seal may be a small part, but it protects one of the most expensive components on your pool pad.

Product Specifications

Buy with Confidence from Benchmark Pool Supply

When you purchase the US Seal PS-1000 Motor Shaft Seal from Benchmark Pool Supply, you’re buying from a real pool supply company that understands pump repairs—not just part numbers.

We stock service-grade seals trusted by pool professionals and technicians. If you need help confirming compatibility or selecting related pump components, our knowledgeable team is here to help.