PSS seals



PSS (Packless Sealing System)


The PSS shaft seal is made by PYI Inc., a premier manufacturer and distributor of high quality marine, boat, yacht, and ship equipment and supplies. The PSS shaft seal is the number one selling marine mechanical seal worldwide and is installed as standard equipment by many of the world's most reputable boat builders. The PSS shaft seal is also recognized as the premiere retrofit (aftermarket) seal on the world market.


Certified by Bureau Veritas, ABS & Rina, boat builders / yards recognize the advantages and value of installing the PSS as it eliminates the maintenance, constant adjustment and cost associated with traditional-packing type 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. The PSS shaft seal can be easily retrofitted and is available for shafts ranging from 3/4” (20mm) to 6” (150mm).


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