vacuum seal on experimental apparatus

Howdy:

I'm planning an experimental apparatus. The part that i am asking about here is a seal between a borosilicate chamber (with an inch or so diameter opening) and small diameter metal tube. The chamber will be evacuated by an adsorbent and may pull a very decent vacuum, I'm not sure how strong (haven't built the thing yet). Also, The chamber will be heated over a fire for several hours, with either a positive or negative pressure inside (will vary between different experiments). heating won't be right next to the seal or anything, but in that time the seal would eventually get hot.

Anyone have any experience with glass/metal seals in these conditions?

much thanks, elliot

Reply to
Permafacture
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i would think a high temp rubber or gasket material would work. there are plenty around car engines, so there must be something available.

Reply to
charlie

Depends on how hot he plans to go, and with what substances inside.

Reply to
No Body
300 C would be really hot. A hot engine temp is about as far as i plan to go.

Contents will be calcium chloride/hydroxide and water. ammonia resistance would be nice also.

Reply to
Permafacture

what are you trying to make? C10H15N

Reply to
No Body

I dont think you use calcium chloride to make any drugs that i know of.

This is an adsorption chiller.

Reply to
Permafacture

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