Tough, abrasion resistant Thordon SXL segmented shaft seals offer several technical advantages over carbon graphite-based seals:
- Ease of installation as carbon segments are quite fragile and can break easily
- Provide extended wear life if abrasives are present
- Increased capability to handle transient loading at startup and shutdown
- Easy installation and misalignment tolerance
- Supplied molded to size
Operating parameters for Thordon SXL segmented shaft seals are generally similar to those for carbon graphite seals in terms of maximum interface pressure and minimum leakage rate. Thordon segmented shaft seals have been designed for shafts up to 2000mm (80") diameter. They can be designed for use in either radial or axial sealing systems.
The main shaft seal of a turbine usually operates under high PV-value conditions and may also be frequently exposed to abrasives in the water. Thordon segmented shaft seals are a proven solution working in both clean and abrasive laden water. Additional advantages of the segmented seal design include easy installation and replacement without removing the shaft. Disassembly of other machine parts may not be required.