givemethebighammer
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| posted on 28/9/03 at 08:48 AM |
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Properties of PTFE tape ?
I need to put some blanking plugs in my water system and in the engine block to remove redundant sender units. Question is will PTFE tape work to
assist the seal ? Only ever used it on household plumbing systems.
thanks
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Peteff
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| posted on 28/9/03 at 08:53 AM |
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It wil work on threaded holes as it is designed to but if the holes are clean and you are not thinking of removing the blanks too often you may be
better using a thread seal compound and letting it set before putting any fluid or oil in.
yours, Pete.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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givemethebighammer
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| posted on 28/9/03 at 08:08 PM |
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so PTFE has no problems with temperature in an automotive environment then.
By thread sealant do you mean the blue threadlock stuff you would use on say flywheel bolts etc ?
[Edited on 28/9/03 by givemethebighammer]
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stephen_gusterson
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| posted on 28/9/03 at 08:42 PM |
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try using google to see the melting temp of ptfe....
atb
steve
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Peteff
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| posted on 28/9/03 at 09:01 PM |
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I was thinking more along the lines of the liquid ones that set solid. I used one called Foliac jointing compound which was oil and heat resistant and
looked like thick red oxide. Borrowed it from brother in law so I don't know where it came from.
Just googled it and came up with this.
http://www.lawson-his.co.uk/scripts/details.php?cat=Sealants&product=1047
Should be available elsewhere, sounds brilliant.
yours, Pete
[Edited on 28/9/03 by Peteff]
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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paulf
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| posted on 28/9/03 at 09:30 PM |
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quote:
Originally posted by Peteff
I was thinking more along the lines of the liquid ones that set solid. I used one called Foliac jointing compound which was oil and heat resistant and
looked like thick red oxide. Borrowed it from brother in law so I don't know where it came from.
Just googled it and came up with this.
http://www.lawson-his.co.uk/scripts/details.php?cat=Sealants&product=1047
Should be available elsewhere, sounds brilliant.
yours, Pete
[Edited on 28/9/03 by Peteff]
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paulf
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| posted on 28/9/03 at 09:33 PM |
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Loctite do a very good pipe sealant in a tube that will work on hydraulics, steam gas and fuel lines. It is like a thread lock mixed with ptfe and is
clean to use unlike Foliac and very effective. A tube has lasted me for the last 15 years and has not deteriorated.
Paul.
quote:
Originally posted by Peteff
I was thinking more along the lines of the liquid ones that set solid. I used one called Foliac jointing compound which was oil and heat resistant and
looked like thick red oxide. Borrowed it from brother in law so I don't know where it came from.
Just googled it and came up with this.
http://www.lawson-his.co.uk/scripts/details.php?cat=Sealants&product=1047
Should be available elsewhere, sounds brilliant.
yours, Pete
[Edited on 28/9/03 by Peteff]
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Big Stu
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| posted on 29/9/03 at 08:57 AM |
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I have personally used PTFE tape on extremely high pressure systems (1850psi) with no problems. It should generally only be used for taper threads to
assist the seal. I have never seen any problems with it from oil contamination or frost. So can't really see any problems with it.
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Aaron
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| posted on 29/9/03 at 12:00 PM |
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Yeah, I'll second that. We use it all the time on the coolant manifolds we make for our injection moulding tools at work. Never had a problem
with temperature or anything else to my knowledge.
good luck,
Aaron
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givemethebighammer
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| posted on 29/9/03 at 09:24 PM |
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thanks
by the way they are taper threads
1/8 npt and 3/8 npt !!!!
took me long enough to find some blanking plugs for them !!!
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