PSS Type A Shaft Seal for 80mm Shaft and 4-1/2" Stern Tube

PSS Type A Shaft Seal

The Type A PSS Shaft Seal is a mechanical face seal. The sealing surface is created between the flat surfaces of the rotating stainless-steel rotor and the stationary carbon flange. The stationary carbon flange is attached to the front side of the bellows with hose clamps, and the back end of the bellows fits over the Stern tube and is secured with hose clamps. The stainless-steel rotor is fitted on the shaft in front of the carbon flange. The stainless-steel rotor compresses the bellows before the rotor is secured to the shaft with set screws. This compression (pre-load) maintains constant contact between the two flat faces of the stainless-steel rotor and carbon flange, allowing the PSS to compensate for the variable fore and aft movement due to propeller thrust. In addition, the carbon flange is over-bored to the shaft diameter allowing it to “float” around the shaft and thus compensate for most misalignment and vibration problems. The stainless-steel rotor is sealed to the shaft by two O-rings recessed into the collar's bore. These O-rings rotate with the shaft and stainless-steel rotor and do not experience wear during operation.

Key Features

• Superior Alternative to Traditional Seals: The PSS Type A Shaft Seal is an ideal replacement for packing glands and lip seals, offering a modern and superior solution.
• Durable Materials: Crafted from high-quality and durable materials, this shaft seal is designed to withstand harsh marine environments, providing long-lasting performance and minimizing the need for frequent replacements.
• Easy Installation: With a user-friendly design, the PSS Type A Shaft Seal facilitates easy installation.
• Low Maintenance Operation: Enjoy peace of mind with the PSS Type A Shaft Seal's low-maintenance operation. Eliminate the need for regular greasing or adjustments, reducing downtime and ensuring your vessel stays on the water without unnecessary interruptions.
• Versatile Compatibility: Designed to fit a variety of shaft sizes and boat types, this shaft seal offers versatile compatibility. Whether you have a sailboat or a motor yacht, the PSS Type A Shaft Seal provides a reliable solution.