The New Wave In Shaft Seals

Not everything is as good as it used to be. In some cases, believe it or not, things are actually better than they used to be. PYI's line of PSS shaft seals, which stands for Packless Sealing System, is definitely a case in point. New materials and new, more precise, manufacturing methods have been combined to produce a vastly superior product to those previously on offer.

This might be the reason why the PYI shaft seal is the Number One seller in mechanical marine seals worldwide. That is a pretty ringing endorsement from the people who are in the best position to know if it is a major improvement over traditional gland seals-- which it most certainly is.

The major improvement in the PSS seal is a revolutionary new carbon stator that is machined to exceptionally fine tolerances. This permits the shaft to ride on it easily without overheating even if it happens to run dry. The stainless steel rotor is secured to the shaft itself and matches up perfectly with the precisely machined stator. Because of the way that these components function together, it is possible to use a PSS seal on just about any type of vessel and produce a noticeable improvement down in the bilge.

Unlike other products which are designed primarily for brand new applications, the unique design characteristics of the PYI shaft seal make it an ideal candidate for retrofitting onto older craft. Over time, older prop shafts may develop either a very slight wobble or a fore-and-aft pulsation that is caused by the action of the prop itself. The parameters of the carbon stator are such that it is an all-but-frictionless assembly that is mostly immune to the heat buildup and wear that comes from being installed on an imperfect shaft. Simply put, there is just the tiniest bit of wiggle room in the design that greatly extends the life of the seal over that of any rival technology. Contact the experts at Propeller Depot to learn all about PYI Marine Shaft Seals. 

Of course the bottom line with any type of shaft seal is that it needs to keep water on the outside of the hull, and it needs to do so for a very long period of time so that you do not need to keep adjusting and tweaking things. In that regard, PYI shaft seals far exceed the standards set by the last generation of seals. An increasing number of builders' yards now utilize these PSS products in all of their new offerings. Many commercial operators reports MTBF rates in excess of 40,000 hours of operation. Those aren't solicited endorsements, by the way. Just the facts.

Propeller Depot is your ultimate source for all PYI Inc Marine Shaft Seals