PSS PRO Shaft Seal 1-1/2" Shaft & 2-1/4" Tube

The PSS PRO Shaft Seal 1-1/2" Shaft & 2-1/4" Tube is a marine-grade mechanical face seal engineered for serious boaters and commercial operators who demand reliability below the waterline. After decades on the water, any experienced captain knows that a failed shaft seal means a flooded bilge, lost fishing time, and costly repairs. This PSS PRO model addresses that critical vulnerability with proven stainless steel and carbon sealing components designed specifically for inboard and shaft-drive configurations.

What sets this seal apart is its reinforced silicone bellows construction paired with a secondary shaft retention collar—features that prevent catastrophic seal failure during heavy-load operation or rough sea conditions. The 316 stainless steel hose clamps (rolled type) resist corrosion in saltwater environments where standard fasteners deteriorate rapidly. The dual-stage design captures water infiltration before it reaches the transmission, maintaining dry bilges mile after mile. These mechanical components work together as a unified system, absorbing vibration and misalignment that would compromise lesser seals within the first season.

This PSS PRO shaft seal suits any boat with a 1-1/2" propeller shaft running through a 2-1/4" tube diameter—common across mid-sized sportfish boats, commercial vessels, and performance cruisers. Installation is straightforward for experienced mechanics or qualified marine technicians familiar with shaft-drive systems. Whether you're running offshore tournaments, commercial charters, or long-distance cruising, the PSS PRO delivers the durability that separates weekend boaters from serious mariners who log serious hours.