Torr Seal
Andrew P Trost
Can anybody offer a quick and effective way of removing cured Torr Seal (from
Varian Vacuum Products) from vacuum fittings?
Andrew
Craig Powderkeg DeForest
Can anybody offer a quick and effective way of removing cured Torr Seal (from
Varian Vacuum Products) from vacuum fittings?
Apiezon!
No, seriously, use a *CRAFTSMAN* flat-blade screwdriver as a chisel,
gently tapping it with a light hammer (eg the urethane/rubber mallet
you can get at Sears). Why CRAFTSMAN? Because of the lifetime
satisfaction guarantee, of course.
I haven't done this much with the original Torr Seal, but we do it to
EPOXI PATCH (competing brand) all the time. It doesn't seem to bond
very well to aluminum: sometimes the whole gob will come off intact
from a machined aluminum surface.
--
DON'T DRINK SOAP! DILUTE DILUTE! OK!
vanc...@ohstpy.mps.ohio-state.edu
I usually end up using a chisel and a hammer :) (seriously!)
-Garrett
Klaus Desinger
>Can anybody offer a quick and effective way of removing cured Torr Seal (from
>Varian Vacuum Products) from vacuum fittings?
Apply some heat until it gets soft
Klaus
--
Klaus Desinger k...@uts.ipp-garching.mpg.de
Rechenzentrum Garching Tel: +49 89-3299-2168
Donald Davis
I don't know the composition of the sealant in question, but if it has
truely cured, i.e. become chemically crosslinked, it will not soften on
heating. It is this property that diffentiates thermoplastic and
thermosetting materials.
-- Donald Carter Davis
--
Donald Carter Davis (y...@nwu.edu), Assistant Director, Undergraduate Laboratory
Department of Chemical Enginering, Northwestern University
"You can find it all inside, no need to wrestle with your pride"
-- Guns and Roses
Klaus Desinger
>In article <1uft60...@nsat.ipp-garching.mpg.de> k...@nsat.ipp-garching.mpg.de (Klaus Desinger) writes:
>>apt...@huxley.anu.edu.au (Andrew P Trost) writes:
>>>Can anybody offer a quick and effective way of removing cured Torr Seal (from
>>>Varian Vacuum Products) from vacuum fittings?
>>Apply some heat until it gets soft
>truely cured, i.e. become chemically crosslinked, it will not soften on
>heating. It is this property that diffentiates thermoplastic and
>thermosetting materials.
It's been some years since I last practised experimental physics.
If I remember correctly, the box of Torr Seal said something like
"resin based". I'm not a native speaker, and I couldn't find "resin"
in a normal dictionary. Still interested what it means chemically.
Anyway, it doesn't really melt when heated, but becomes softer; about
as hard rubber. It may then be removed with the help of a screwdriver.
You won't need hammer and chisel.
Andrew P Trost
You are not far off what I actually used! A warm flame and a sharp edge
work wonders on cured Torr Seal (TM)! ;)
Andrew
(___) /-----------------------------------------\
(o o) / Andrew Trost Andrew...@anu.edu.au \
/----------\ / / phone (+61)-6-249-5157 \
/ l ll -----+ fax (+61)-6-249-0738 +
* ll ll \ /
ll-------ll \ Research School of Earth Sciences ANU /
ll ll \-----------------------------------------/
msh...@peg.pegasus.oz.au
Dear Andrew,
i]
You have requested a means of removing Varian Vacuum Products TorrSeal.
My Company is the Australasian distributor for V.V.P. I have a product
sheet in my Office giving full details of the Composition of TorrSeal
including information on recommended Solvents.
I can Fax it to you if you wish - let me have your Fax No. by Email.
However as you are in the U.S. I would suggest that you contact Dave
Cloues at Varian Vacuum Products in Lexington MA he is their very helpful
Tech Support man Tel is (617) 860 something I'm not in my Office right now
but you should be able to get the number from Directory Assistance for
Lexington , MA..
Dave will probably have the product sheet to Fax or Mail to you too.
Give Dave my best wishes when you speak to him.
Best Regards
Bill Stanton
Stanton Scientific
msh...@peg.pegasus.oz.au
