Best / most cost effective way to waterproof float switch wiring

I picked up this float switch on ebay: http://www.ebay.com/itm/251155136161 (sorry, I'm sure that will eventually be a dead link...)

I'd like to ensure that the wiring is waterproof. I intend to run the wire through a lid in my mash tun. Any tips?

 

You can use adhesive backed shrink wrap over the joints. just extend it 1/2" on either side of the joint. I would guess that you are going to use a control voltage and a relay instead of running line voltage to the float switch. One thing that would allow you to do is have a 3 position switch that you can set to on/off/float/.

 

Thanks, that sounds like a good idea. Yes, the float switch will operate the control circuit.

 

i use it on my boat and brew rig. I have never had a leak yet.

 

Mine doesn't have the extension like yours does but I used shrink tubing with silicone sealant.

 

Hah, thanks for chiming in. I actually modeled mine after yours... I thought about asking in your old thread how you sealed your line.

Your manifold seems to be dry fitted, am I right? I did pretty much the same thing, but had some very bad leaks when I dry fitted it, so I soldered it all together. It was a nightmare...

Anyway, did you apply the silicone sealant before or after the shrink wrapping?