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Default Old Goop on Drain Pipes - What is it?

Often when I take apart OLD plastic drain piping under sinks I find some
really sticky brown material on the threads. Usually I see it on black ABS
pipe. Apparently put on by plumbers long ago. Stuff is so goopy/sticky I
assume not only did it seal threads but also keep from working loose. Very
difficult to remove.

Anyone know what it is or if it's still used?
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Default Old Goop on Drain Pipes - What is it?

On Jul 11, 11:25*am, Red Green wrote:
Often when I take apart OLD plastic drain piping under sinks I find some
really sticky brown material on the threads. Usually I see it on black ABS
pipe. Apparently put on by plumbers long ago. Stuff is so goopy/sticky I
assume not only did it seal threads but also keep from working loose. Very
difficult to remove.

Anyone know what it is or if it's still used?


Sounds like Permatex #3 Aviation Grade sealant. Still a staple in many
A & E and car mechanics toolboxes. Treasured by Chevy motor builders
for those wretched intake manifold gaskets and the Mopar guys for
water pump gaskets. Personally, I like it for all manner of thread
sealing. Disassembly is helped by a bit of heat, and the sealant is
soluble in alcohol. Great stuff for assembly of Lycoming and VW air
cooled engine case halves, too. The product has been around since
before WW II I am told.

Joe
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Default Old Goop on Drain Pipes - What is it?

Joe wrote:
On Jul 11, 11:25 am, Red Green wrote:
Often when I take apart OLD plastic drain piping under sinks I find some
really sticky brown material on the threads. ...


Anyone know what it is or if it's still used?


Sounds like Permatex #3 Aviation Grade sealant. ...


Maybe, but doesn't seem at all likely for plumbing, particularly drain
lines that aren't pressurized.

I would strongly suspect it was a pipe dope but what specific one in
particular I don't know...

--
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Default Old Goop on Drain Pipes - What is it?

In article ,
dpb wrote:

Joe wrote:
On Jul 11, 11:25 am, Red Green wrote:
Often when I take apart OLD plastic drain piping under sinks I find some
really sticky brown material on the threads. ...


Anyone know what it is or if it's still used?


Sounds like Permatex #3 Aviation Grade sealant. ...


Maybe, but doesn't seem at all likely for plumbing, particularly drain
lines that aren't pressurized.

I would strongly suspect it was a pipe dope but what specific one in
particular I don't know...

--


I was hoping someone would, as I ran into this stuff just a month ago,
too, in a house that had been recently remodeled. It was on the cleanout
threads. Very gooey, tenacious stuff.
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