What can I use to seal my air cooled light?

I need my air cooled light to be completely airtight and I can see that there are some gaps where the hood meets the glass. Any products you would recommend or will good old duct tape do the trick?

Whatever works man. You could try "great stuff" a foam sealant, but that can be messy. Duct tape is fairly air and light tight too.

duct tape doesn't like high heat very well.
Might want to try a silicone of some sort?

Duct tape does not do well when exposed to heat. I recommended any silicone like indoor and out. will smell till it cures 24hr. the other thing I recommend is you have the fan blow through the cool tubes that way if you miss a small hole it will just let fresh air in. If you put the fan at the end and suck air through the cool tube you will suck any smell from the room into your exhaust air. Not a good thing.

Peace

What about a piece of weather stripping? It comes in so many different thicknesses and styles, I'm sure you could find one to press in there.

use weather proof caulk.



http://www.drillspot.com/products/334699/GE_Silicone_GE5000_Waterproof_Sealant?s=1