Introduction
The document introduces SIMPLAN® Shaft Seals, designed for water-lubricated sterntubes by Simplex-Turbulo-Systems. These seals are developed using advanced materials and over 50 years of expertise, offering an alternative to traditional stuffing boxes for new and conversion projects.

Specifications
Shaft seals are available for diameters ranging from 2.36” to 9.5” (60 - 240 mm). The seals feature a FEM-designed neoprene seal body with optimized geometry to maintain constant pressure at the sealing face during axial shaft movements. The seals use SiC "hard against hard" sealing faces, ensuring durability against hard sands or sediments.

Advantages

• Constant sealing pressure
• Unique materials technology
• Practically maintenance-free
• Reduced dock-time and lower costs
• Fast investment return

Certifications
SIMPLAN seals meet the standards of the "Central Commission for Rhine Shipping" and are certified by Germanischer Lloyd, the American Bureau of Shipping, Lloyd’s Register, ClassNK, and the Russian Maritime Register of Shipping.

Technical Data
The document provides a detailed table with specifications for various model sizes, including shaft diameter, total length of stationary seal, outside diameter, bolt circle diameter, and weight.

Conclusion
SIMPLAN shaft seals offer a cost-effective, efficient, and environmentally friendly solution for water-lubricated sterntubes, reducing maintenance and operational costs while ensuring high performance and durability.