STB Water-Lubricated Shaft Seal – Metric & Imperial Sizes
The STB propeller shaft seal is designed for water-lubricated marine propulsion systems, providing reliable sealing of the stern tube while allowing continuous cooling and lubrication of the shaft.
The seal features a flexible bellows construction combined with stainless steel clamps, ensuring a secure and leak-free installation. The integrated water supply system improves lubrication, reduces friction, and extends the service life of both the seal and the shaft.
Key Features
- Water-lubricated shaft seal system
- Flexible bellows design
- Integrated water supply for cooling and lubrication
- Clamp-mounted installation
- Reduced friction and wear
- Suitable for marine propulsion systems
Technical Specifications
| Shaft | Stern Tube (mm) | Length (mm) | SKU |
|---|---|---|---|
| 25 mm | 42 | 105 | STB25E |
| 30 mm | 43 | 111 | STB30E |
| 35 mm | 54 | 119 | STB35E |
| 40 mm | 60 | 119 | STB40E |
| 45 mm | 64 | 118 | STB45E |
| 50 mm | 70 | 120 | STB50E |
| 1″ | 43 | 105 | STB2540E |
| 1 1/4″ | 49 | 111 | STB3571E |
| 1 1/2″ | 60 | 119 | STB3510E |
| 1 3/4″ | 65 | 117 | STB4445E |
| 2″ | 70 | 120 | STB5080E |
This shaft seal is designed for use in systems where water lubrication is required. The continuous flow of water reduces heat buildup and ensures smooth shaft operation, making it suitable for both recreational and commercial vessels.
