PYI PSS - Packless Sealing System 

The PSS Shaft Seal is a marine mechanical seal  that is installed as standard equipment by many of the worlds most reputable boat builders and boat yards.
The PSS Shaft Seal is also recognized as the premiere retrofit (aftermarket) seal on the world market.
Boat builders and boat yards recognize the advantages and value of installing the PSS as it eliminates the maintenance, constant adjustment and cost associated with traditional type of packing glands.
Aside from these benefits, the PSS Shaft Seal helps to eliminate water in the bilge (100% water tight) and wear to the propeller shaft.
Any vessel can easily be retrofitted with a PSS Shaft Seal.