Quote Originally Posted by PropNutt43 View Post
Yes, I used some 1/8 inch (3mm) silicone fuel tubing. It works great keeps the water out completely. only want about 1/8 " to rub against flex shaft and make sure a little grease gets in it to reduce friction.

BJ Flex Shaft Seal 01.JPG
I am still getting an unacceptable amount of water through the stuffing box tube after upgrading to the Fullers Hardware/ Octura 642 prop/ and (2) 2s 4800mAh lipos. I tried making a clear plastic shroud that covered the flex coupler area like a roof from battery box to battery box and from the motor to the electronics tray. This confirmed that the water is coming from the stuffing box tube.
Is 1/8 inch (3mm) standard size fuel tubing? I tried a piece of fuel tubing similar to what comes with the boat for the cooling system and it just tore. Would you recommend adding some CA to where the plastic stuffing box tube exits the copper stuffing box tube on the inside and or outside of the boat or anywhere else? Any other recommendations are appreciated.