Originally Posted by SVTatia
I had a PSS on my last boat but only because it was steel
boat, I didn't know there were other alternatives to the bronze
ones. But I was constantly checking it due its vulnerabilties, and I had leaks
due to debris being caught in the connecting surfaces and I was always cheking the bellows pressure. A bit of paranoia I guess, but I never really trusted it.
The Volvo one seems to be more robust because it is one piece and there are no moving parts
, is this the case?
There is no bronze in the PSS seal. The rotor is stainless steel
. Carbon stator surface is mated to the rotor and there is no way anything will get between the surfaces, if correctly installed. I also added a backup collar on the shaft to prevent the rotor from ever sliding up. Did not touch the system in 5 years.
I believe you might be describing a different product.
The Volvo seal has steel shaft moving against rubber...I am actually surprised they last as long as they do.