/ 
Proven technology for safety
Unlike traditional sealing systems, PSS Shaft Seal is based on leak-free mechanical seal technology, designed to provide a consistent, reliable seal.
The principle is simple but extremely effective:
- a fixed carbon face
- stainless steel rotating face
- compression provided by an elastomer bellows
This system creates a perfectly flat, consistent sealing surface, eliminating water infiltration and significantly reducing wear.
PSS, cable glands and lip seals: what are the differences?
Historically, shaft sealing systems were based on the traditional braided packing gland. This system works by stacking compressed gaskets around the shaft, requiring precise adjustment to maintain the slight drip required for cooling. Although robust, it involves :
- regular adjustments
- constant monitoring
- risk of excessive leakage or, conversely, overheating if overtightened
Lip seals represent an intermediate development. They ensure sealing by means of one or more elastomer lips in direct contact with the shaft. Easier to use than cable glands, they generally provide drip-free operation and require less maintenance. However, they do have certain limitations:
- gradual wear of the lips due to friction
- increased sensitivity to tree surface condition
- service life dependent on operating conditions (alignment, vibration, water pollution)
Compared to these solutions, the PSS mechanical seal stands out for its principle of flat faces with controlled friction, which offers :
- drip-free sealing
- reduced component wear
- greater stability over time
A virtually maintenance-free solution
One of the main advantages of the PSS Shaft Seal is that it is virtually maintenance-free. Unlike cable glands and, to a lesser extent, lip seals, it does not require regular adjustment.
This translates into :
- fewer technical interventions
- reduced risk of human error
- time-saving for crews and operators
Periodic inspection and replacement of the bellows as recommended are all that's needed to ensure proper operation.
Performance and durability
Thanks to the quality of the materials used and the design of the system, the PSS Shaft Seal offers a long service life, even under demanding operating conditions.
The benefits are many:
- reduced shaft wear
- vibration limitation
- silent operation
- improved overall propulsion system efficiency
The absence of leaks also contributes to maintaining a clean engine environment, reducing the risks associated with dampness in the bilges.
Adaptable to all types of vessels
The PSS Shaft Seal is now used on a wide variety of boats:
- pleasure boating (sailboats, motorboats)
- professional ships
- commercial and industrial units
Available in a wide range of sizes, it adapts easily to different shaft diameters and configurations, making it a particularly versatile solution for both shipyards and refits.
A strategic choice for shipyards and shipowners
With ever-increasing demands for reliability, safety and performance, the choice of equipment becomes strategic.
PSS Shaft Seal is the perfect answer to these challenges, offering :
- a modern, proven solution
- reduced maintenance costs
- improved on-board safety
- long-term enhancement of ship value
The PSS Shaft Seal represents a major evolution in shaft sealing management. Compared with traditional glands and lip seals, it offers a superior level of reliability, performance and ease of use.
In a sector where every detail counts, integrating innovative solutions like PSS Shaft Seal helps to improve the overall quality of constructions and meet the most demanding standards of the international marine market.
