PSS Shaft Seal, 1.5-Inch Shaft, 2.5-Inch Tube

The PSS Shaft Seal, 1.5-Inch Shaft, 2.5-Inch Tube is a mechanical dripless shaft-sealing system designed for the shaft and stern-tube dimensions stated in this model. It replaces traditional packing-gland arrangements with a rotating stainless-steel rotor and stationary carbon sealing surface, creating a controlled interface around the propeller shaft.

The seal's carbon and stainless surfaces remain in contact through bellows compression, allowing the rotor to turn with the shaft while the carbon component stays fixed to the stern tube. Correct sizing and installation are critical because shaft diameter, stern-tube diameter, compressed length, rotor position, and water-supply requirements determine proper sealing performance.

Verify all published dimensions against the actual shaft and stern tube before installation. Follow PSS procedures for bellows compression, rotor positioning, set-screw locking, venting or water injection, and hose-clamp placement. After launch, inspect the seal for leakage and proper cooling, then follow the manufacturer's inspection and bellows-replacement schedule.

• The carbon and stainless sealing faces create the shaft-water barrier.
• The stainless rotor turns with the shaft against the stationary carbon surface.
• Model-specific sizing is essential for proper compression and sealing.
• Correct installation is built to minimize routine shaft-seal leakage.

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