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?
> 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
i would think a high temp rubber or gasket material would work. there are plenty around car engines, so there must be something available.
>> 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
> i would think a high temp rubber or gasket material would work. there are > plenty around car engines, so there must be something available.
Depends on how hot he plans to go, and with what substances inside.
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