Shaft Seal P55 – Specialized Polaris Booster Pump Seal
Product Overview
As a retailer of hot tub spare parts, I’m offering the P55 shaft seal, specifically engineered for Zodiac Polaris booster pumps with 5/8″ shafts. This specialized component is designed to meet the unique demands of pressure-side pool cleaner applications.
Key Features
The P55 incorporates premium components:
- Professional-grade Buna construction
- Engineered for high-pressure applications
- Optimized for booster pump operations
- Enhanced durability design
- Precision 5/8″ shaft compatibility
Technical Details
This seal is specifically engineered for the demanding requirements of Polaris booster pumps, where consistent pressure and reliability are crucial for proper cleaner operation. The specialized design ensures optimal performance in high-pressure environments.
Exploded parts diagram: This part is shown as item #3 on the Polaris Booster Pump Prior to Serial # M120111001, PB4-60 exploded parts diagram.
🔧 Polaris Booster Pump Prior to Serial # M120111001, PB4-60 – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | 35-100-1004 |
| – | Nipple, Zodiac Polaris Booster Pump, 3/4"mght x mpt |
| – | Hose Barb, Zodiac Polaris Booster Pump, with Clamp |
| 20 | 34-100-W001K20 |
| 19 | Pressure Hose, Zodiac Polaris Booster Pump, 3ft, Heavy Duty |
| 18 | Quick Connect, Psck of 4, Zodiac Polaris, Retainer |
| 17 | Quick Connect, Zodiac Polaris Softube™ 4 Pack |
| 16 | 34-100-W001K16 |
| 15 | Install Kit, Zodiac Polaris Booster Pump,6ft Hose,Connecters |
| 14 | Drain Plug, Zodiac Polaris Booster Pump, 1/8" mpt |
| 13 | Bolt, Zodiac Polaris Booster Pump, Stand to Seal Plate |
| 12 | Pump Stand Feet, Zodiac Polaris Booster Pump |
| 11 | Pump Stand, Zodiac Polaris Booster Pump |
| 10 | Motor Support, Zodiac Polaris Booster Pump |
| 9 | Bolt, Zodiac Polaris Booster Pump,w/Nut,Volute to Seal Plate |
| 8 | Motor, Century,0.75hp,115v/230v,1-Spd,Polaris Booster Pump |
| 7 | O-Ring, Zodiac Polaris Booster Pump, Shaft, Quantity 5, O-39 |
| 6 | Bolt, Zodiac Polaris Booster Pump,Seal Plate to Motor, Qty 2 |
| 5 | Seal Plate, Zodiac Polaris Booster Pump |
| 4 | 34-100-W001K4 |
| 3 | Shaft Seal, Zodiac Polaris Booster Pump, 5/8" Shaft, Buna ◀ this part |
| 2 | Impeller, Zodiac Polaris, Booster Pump |
| 1 | Volute, Zodiac Polaris Booster Pump, with Drain Plug |
Specifications Table
| Specification | Detail |
|---|---|
| Model Number | P55 |
| Shaft Size | 5/8″ (15.875mm) |
| Primary Material | Buna |
| Application | Booster Pumps |
| Operating Pressure | Up to 150 PSI |
| Spring Material | Stainless Steel |
| Temperature Range | -20°F to 250°F |
| Design Type | High Pressure |
| Seal Type | Mechanical |
| Usage | Continuous Duty |
Installation Compatibility
Specifically designed for:
- Zodiac Polaris PB4-60
- Zodiac Polaris PB4-SQ
- Other compatible Polaris booster models
- High-pressure applications
- Continuous operation systems
Performance Benefits
- Engineered for high-pressure operation
- Enhanced durability under load
- Optimized for constant pressure
- Superior resistance to wear
- Designed for extended service life
- Reliable under demanding conditions
Maintenance Guidelines
For optimal booster pump performance:
- Verify pump model compatibility
- Check shaft condition
- Ensure proper alignment
- Monitor operating pressure
- Regular seal inspection
- Maintain proper lubrication


















