Water can enter through even the smallest cracks, but how do you avoid water entering ships at the propeller shafts. I mean…seals in general, must fit tight, but here you still have to allow for movement. How do they do it?
In: Engineering
A lip seal of some sort. They usually sport a sort of “cup” where the pressure of something trying to get in or out actually makes them seal tighter. The same way a crankshaft doesn’t leak oil out of your car.
Imagine the wiper blade on a car, except formed into a donut shape, at its absolute most basic form. Google for lip seal or radial shaft seal for pics and more info.
Latest Answers