U.S. Seal PS-1000 Seal Assembly5/8 Shaft
The U.S. Seal PS-1000 Seal Assembly is a mechanical shaft seal designed for a 5/8 pump motor shaft in pool and spa applications. It provides reliable sealing between the motor and pump housing to prevent leaks and extend pump life.
Key Features
- 5/8 shaft sizecommon in residential pool and spa pumps.
- Durable construction with Buna elastomers, molded primary ring and ceramic seat.
- Designed for general service pool applications.
- Industry-standard part compatible with many pump brands and replacement applications.
Technical Specifications
- Part Number: PS-1000
- Shaft Size: 5/8
- Seal Head Outside Diameter: ~1.437
- Mating Ring Bore: ~1.250
- Material Highlights: Ceramic seat, molded plastic primary ring, stainless steel hardware.
Installation & Compatibility Notes
Before installing the seal, shut off power to the pump/motor, drain the pump housing, and remove the old seal. Clean the shaft and seal plate surfaces free of debris and corrosion. Install the PS-1000 assembly ensuring correct orientation of the stationary ring and rotating element. Reassemble the seal plate, reinstall the motor/pump and prime the system. After startup, confirm there is no water leakage along the shaft and that the pump operates quietly.
Maintenance Tips
- Check for leaks or water seeping into the motor during routine maintenance; early detection prevents motor damage.
- If the pump has been removed or the wet end disassembled, always replace the shaft seal rather than re-using the old one.
- Ensure the shaft is not bent or worn, and that the seal plate faces are flush and clean to maximize seal life.
Why Choose This Seal?
For pool professionals and service technicians, the U.S. Seal PS-1000 provides a dependable, widely compatible mechanical seal at an economical price. Keeping this seal in stock supports efficient pump servicing and replacement in residential pool systems.








