what is the difference between teflon tape and pipe tape?
I was at the hardware store and they had teflon (in a blue spool) and
pipe tape in a red spool.
Also yellow for gas but i know what that is for :)
my question is if im joining pipes what do i want to use?
Copper and brass fittings i have been using teflon
WHat is pipe tape for? Is that better for galvanized or whats the deal?
IM getting read to get the sawsall out and rip out all my galvanzied
but there will be a few spots were i go from ABS to galvanized and need
to know what type of pipe tape to use to make these connections.
I will also be putting in water shutoffs and water supply lines (for
water in door fridge).
I just want to know what everyone uses or recommends.
Same stuff - different name. (Unless they came out with something new
The yellow works great on pipes too, same stuff but thicker.
When putting threaded nylon fittings into steel pipe (like well pipe
ends), they always seem to leak with the white teflon tape no matter
how thick I make it. The yellow solves that problem. Yes, it is for
gas too, but also great for water pipes. Pink is thicker yet, I have
only used that once when threading some 4" pipes together.
Use the plain white tape, or the yellow. Both will work. You dont
have to wrap the yellow as many turns. Personally, for the ABS, I'd
use the yellow. For some reason plastic to steel seems to need the
Teflon is a trademark of DuPont, the generic term is PTFE, shorthand
for polytetrafluoroethylene. The only thing against it is that aluminum
will react with it and it will decay, so use pipe dope for
On 4 Nov 2005 00:24:08 -0800, firstname.lastname@example.org wrote:
Just curious, where did you get that info from? I never heard it, and
find it hard to imagine how that could be. For example, teflon
coating is often on aluminum frying pans.
I'm not saying you are wrong, but I'd like to verify it.
I picked it up off the sci.chem group about a year or two ago. He said
that the aluminum metal had a high affinity for the flourine atoms on
the PTFE polymer chain and that there was a transfer of some sort (I am
paraphrasing). That is not my specialty but it makes sense with what I
know, aluminum is a chemically active metal with some alkalinity, the
only thing that makes it stable is the formation of a thin oxide
surface. Flourine is active at the extreme other end of the spectrum
and I think would form these compounds, its bond with the polymer chain
PTFE is normally strong and stable but aluminum would be a strong
I don't know if this is good enough evidence for you, a good search
through the usenet archive would turn up the original post. The teflon
coating on aluminum pans is admittedly a strong counterindicator,
though. I could research it further, but it is easier for me to just
use pipe dope on aluminum.-Jitney
On 4 Nov 2005 07:35:31 -0800, email@example.com wrote:
Thanks for the followup. I am no scientist either, but what you said
makes sense. I guess if I saw a purpose, I'd continue to research
this further, but I can not think of one bit of aluminum pipe I have
ever used, except for the old aluminum gas pipes they used on kitchen
ranges, dryers, etc. years ago, and those still had brass fittings.
They were banned years ago, and for good reason. So, for all
practical purposes, I do not see ever using aluminum pipes, but if I
did, I will use pipe dope.
Just curious, can you think of any time you ever dealt with aluminum
pipe (besides gas lines)? I sure cant...
PS. Of this topic a bit, but when I was a kid, (actually a teenager in
the early 1960's), my dad had that alum tubing going to our clothes
dryer for the gas supply. From the vibrations of the dryer, the
tubing would spring leaks. Dad would shut off the gas, put some glue
on it, and turn the gas back on when the glue dried. At one point, I
think there were at least 5 blobs of glue on that 8 foot piece of
pipe. When I think of that now, I shudder !!!! Even as a teenager, I
was sort of a handyman and was always working with tools. One day mom
was hollaring about gas odor in the basement and that pipe sprung a
leak again. This time the leak was large and I told dad that we need
to get rid of that tubing and change it to solid steel black pipe with
a proper flex tube. Dad would never touch plumbing, but he agreed
with me and said he would call someone. I told him I could do it, and
he took me to the hardware store to get the parts and I replaced it.
Never another gas leak after that....
Don't bother. Aluminum isn't sufficiently electro-postive enough to
attack Teflon. The company I work for uses Teflon tape on aluminum
fittings, and the only real concern is getting enough tape on to prevent
the usually crudely cut threads from just slicing through the tape rather
than deforming it. That's the major reason why you might want to use
dope, but if tapes what you've got to hand, then go right ahead.
Remove the dead poet to e-mail, tho CC\'d posts are unwelcome.
Mean People Suck - It takes two deviations to get cool.
I see it some on car and motorcycle engines, and some heat exchangers.
Not much else, but Gore-Tex offers its PTFE product for wire
insulation, and there is some aluminum wire here and there. I hope some
electrical engineers are reading this...-Jitney
If you use any kind of Teflon tape on a gas line and there is a warranty
claim on anything downstream of that taped fitting, there may be a problem.
Manufacturers will occasionally inspect gas valves, etc to see what caused
the failure. If any bits of Teflon tape is found in the valve, that
warranty will be voided. Teflon tape does break up fairly easily and gets
into the inner workings of the valves. That tiny piece of tape can cause a
There is no such thing as teflon tape:
"• 1938 — Dr. Roy Plunkett, a DuPont scientist, discovered
• 1946 — DuPont registers the trademark, Teflon® for PTFE.Dr. Roy Plunkett
| DuPont™ Teflon® PTFE
• Late 1940s — DuPont began marketing PTFE on a small scale for certain
industrial applications, including valves, o-rings, and pipe linings.
• 1969 — DuPont PTFE fine powder is used for plumber tape for sealing joints
in piping and central heating systems. However, DuPont never manufactured the
tape. The manufacturers purchased and used DuPont PTFE fine powder as consumers
started favouring easy to apply PTFE tape over existing solutions. Plumber tape
using DuPont™ Teflon® PTFE fine powder was the first such product to reach
• Times changed, other companies started making PTFE fine powder that was of a
lower quality and at a lower cost. The companies that made the plumber tape
switched to the lower quality powder. They didn’t have permission from DuPont
to use the Teflon® brand because they no longer were using DuPont product.
• Separately, in the 1990’s, DuPont stopped selling its PTFE product lines
labeled as Teflon®, including fine powder. The reason for the change was to
ensure products bearing the Teflon® brand met the highest quality standards
expected by consumers. Any use of the Teflon® brand now needs written
authorization from DuPont.
Teflon® is a registered trademark of DuPont."
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