You don't think regular rubber will take 250 max?? Maybe I spoke too soon, but I use mine at temps below 250 and surely the rubber will hold up. ??
If you use the high temp stuff do you think you could let it dry with a substitute probe that you could pull out when it got dry so it would leave a formed hole, and then just thread your Maverick probe through it? Maybe put a little oil on there so it wouldn't stick to the probe and allow you to remove it when it dried?
Just thinking. Sometimes that is bad, I admit.
Ron, I don't think they will hold up to 250 long term. Short term, maybe?
And I guess I read the original question as he wants to put the entire probe inside with only the wire remaining in the hole that was drilled. To answer your question though, if the probe was lubed 1st (Pam maybe) you might be able to slide the probe back out after the silicone cured. A person could test it out on clean nail, would hate to ruin a probe.
And reading your last post, it may not make a bit of difference if the hole isn't sealed. And the 2 clip idea would work for sure.