Waterco HydroStar Seal Plate | Part #6340693
Product Overview
As a retailer of hot tub spare parts, I supply this premium-quality seal plate designed specifically for the Waterco HydroStar pump series. This essential component creates a watertight seal between the pump housing and the motor, protecting vital internal components from water ingress while ensuring optimal pump performance.
Key Features and Benefits
- Precision-engineered to exact Waterco specifications
- Durable corrosion-resistant material construction
- Enhanced sealing capability for extended pump life
- Direct OEM replacement part
- Designed for smooth operation and reduced maintenance
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 6340693 |
| Material | High-grade thermoplastic |
| Compatibility | Waterco HydroStar Series Pumps |
| Seal Type | Mechanical |
| Color | Black |
| Installation Type | Bolt-on |
Exploded parts diagrams: This part is shown as item #2 on the Waterco HydroStar (2-1/2″) Self Priming Semi-Commercial Pump; item #21 on the Waterco HydroStorm Plus Pool Pump exploded parts diagrams.
🔧 Waterco HydroStar (2-1/2") Self Priming Semi-Commercial Pump – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Tool, Klorkinator, Lid/Cover Removal Tool |
| 24d | 34-252-W005K24D |
| 24c | 34-252-W005K24C |
| 24b | 34-252-W005K24B |
| 24a | 34-252-W005K24A |
| 23 | Screw, Waterco HydroStar, Impeller |
| 22 | Washer, Waterco HydroStar, Impeller, Fiber |
| 21 | Screw, Waterco AquaMite/SupaMite, 3.0hp Diffuser |
| 20 | O-Ring, Buna-N, 3" ID, 1/8" Cross Section, Generic |
| 19 | 34-252-W005K19 |
| 18 | 34-252-W005K18 |
| 17 | 34-252-W005K17 |
| 16 | Pump Stand, Waterco HydroStar |
| 15 | Motor Support, Waterco HydroStar |
| 14 | 35-252-1234 |
| 13 | 34-252-W005K13 |
| 12 | Gasket, Waterco HydroStar, Drain Plug, 1/2"ID, 7/8"OD |
| 11 | Drain Plug, Waterco |
| 10 | Trap Lid, Waterco HydroStar |
| 9 | O-Ring, 7-3/4" ID, 3/16" Cross Section, Generic |
| 8 | Basket, Pump, OEM Waterco Hydrostar |
| 7 | Union Adapter, 2-1/2" Buttress Thread x 2" Slip |
| 6 | 34-252-W005K6 |
| 5 | 34-252-W005K5 |
| 4 | Shaft Seal, Waterco/Jandy, 3/4" Shaft, Buna, Generic |
| 3 | Gasket, Waterco HydroStar, Seal Plate |
| 2 | Seal Plate, Waterco HydroStar ◀ this part |
Installation and Maintenance
The seal plate installs directly onto the motor shaft and secures to the pump housing using the existing mounting bolts. Regular inspection of the seal plate during routine maintenance helps ensure continued pump efficiency and prevents potential water damage to the motor.
Compatibility
This seal plate is compatible with:
- Waterco HydroStar Pool Pumps
- Waterco HydroStar Spa Pumps
- Select Waterco commercial pump applications
Recommended Usage
For optimal performance, install this seal plate as part of a complete pump maintenance program. Regular inspection of the seal and surrounding components helps maintain pump efficiency and extends equipment life.
Note: Always verify part compatibility with your specific pump model before installation








