Good morning OFC. I am making 2 new scrubbers and ordering a fan today. It's nice to have a spare. In a previous life, I was a carbon scrubber operator . So, I want things ... Change of plans.
Actually, plan B, I'm buying the scrubbers new. I plan on reusing the scrubbers, regenerating the carbon. If I get a decent all metal unit, I should be able to regenerate the carbon without disassembly. That removes any reason to diy. The process is simple. Burn it until the impurities are carbonized, and quench cool it to reopen the micro fissures in the carbon. Clean the outside of it and hook it up again for another six months of so.
The heat that was used in an industrial setting was red hot for maximising the micro fissures in the carbon. I don't see why on a small scale, just cooking until it's burnt won't work about as well. I've burnt food in the oven often enough over the years. There is no rocket science there. As long as there isn't hidden plastic parts, all should be well.
I've seen silicone caulk that was made to withstand oven temps, to 600 degrees f. Pizza temps are about as high as I would need, so if the lazy plan doesn't work, I still can revisit plan A.