i personally don't, unless the sealing surfaces are pitted or eroded.... but in this location it wouldn't end the world to use a lil permatex or rtv red / black / right stuff.... just don't get crazy. remember.. extruded sealer will clog the radiator.. AND you are gluing the cap and gasket on.. and the next fool that has to change it may cuss you :) ( and that next fool may be you ) :) BTDT thus i tend to plan on 'next time' when i make repairs..
if it is pitted or rough so that you think it wont seal. clean up the best you can with sand aper / wire wheel.. including the hose snout.. smear on thin and go with new gasket. same deal on hose snout. i have seen som soooo pitted they would not seal on a new hose.. thius a thin film of black rtv or similar to fill the potholes then push the hose on.. clamp, allow to cure, then circulate some water... cheack for floaters later. :)
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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