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.


Thanks!

"scale" wrote in message
oups.com...
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.

Pink is heavier than white. You can use whichever you happen to like.
I use yellow; it handles much better than white and means I only have to
have one kind.

strange but the yellow was labeled for gas at my home depot.

im sure they make all different colors for different applications.


Toller wrote:
"scale" wrote in message
oups.com...
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.

Pink is heavier than white. You can use whichever you happen to like.
I use yellow; it handles much better than white and means I only have to
have one kind.

scale wrote:

strange but the yellow was labeled for gas at my home depot.

im sure they make all different colors for different applications.

The colors just distinguish the thickness...the only reason yellow is
"for gas" is because of the extra thickness and that's the color they
chose. Same stuff, different thickness as Toller says...

Toller wrote:
"scale" wrote in message
oups.com...
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.

Pink is heavier than white. You can use whichever you happen to like.
I use yellow; it handles much better than white and means I only have to
have one kind.

On 3 Nov 2005 05:39:17 -0800, "scale" wrote:


I will also be putting in water shutoffs and water supply lines (for
water in door fridge).

So you're not using polypropylene. That's good.

Copper, installed right, is 1000 times less likely to spring a leak.

Remove NOPSAM to email me. Please let
me know if you have posted also.

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
aluminum.-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
problem.


"scale" wrote in message
oups.com...
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.


Thanks!

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
attractant.
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

wrote:
On 4 Nov 2005 07:35:31 -0800, wrote:

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
attractant.
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

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.

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.



John
--
Remove the dead poet to e-mail, tho CC'd posts are unwelcome.
Mean People Suck - It takes two deviations to get cool.
Ask me about joining the NRA.

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

replying to scale, Glenn wrote:
coffin wrote:

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.
Thanks!


There is no such thing as teflon tape:

from DuPont:
"€¢ 1938 €” Dr. Roy Plunkett, a DuPont scientist, discovered
polytetrafluoroethylene (PTFE).

€¢ 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 consumers.

€¢ 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 didnt have
permission from DuPont to use the Teflon® brand because they no longer
were using DuPont product.

€¢ Separately, in the 1990s, 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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