Do you use Teflon tape on toilet supply line?

Asked By: Mahamud Arze | Last Updated: 18th April, 2020
Category: home and garden indoor environmental quality
4.9/5 (2,009 Views . 14 Votes)
No tape needed. The seal is either from the compression sleeve, which you would have with solid risers. or at the bottom of the supply line , it will have a shaped end that snugs into the socket of the fill valve, or most of the time, a flat fiber washer for the seal.

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Simply so, does toilet supply line need Teflon tape?

Use the plumber's Teflon tape and wrap the stems located at the water supply valve at the base of your toilet . Teflon tape is used to make an airtight seal between the compression nuts on the ends of the water supply line and the connectors.

Beside above, how long are toilet supply lines? Typically they are 3/8” in diameter, but toilet supply line size can vary in length, usually anywhere from 9” to 20”. Measure for accuracy to ensure you are buying a part that will match your installation.

Subsequently, one may also ask, do an fittings need Teflon tape?

You should never use teflon tape /paste on AN fittings - the seal is made on the 37* face, not the threads. Pipe threads are a different story - those use tapered threads to make the seal (which isn't a very good seal BTW), so those damn near require teflon tape /paste to make sure the seal is reliable.

Should I use Teflon tape on brass fittings?

teflon tape and firm is sufficent because if you're just jaming the brass together you can break the seal provided by the teflon or similar, if using unions they seal brass to brass and use the above mention nudge and grunt rule, just be carful not to mishape the fitting as brass can crack or bend with undue force.

31 Related Question Answers Found

Will plumbers tape fix a leak?

These type of leaks must be repaired by cutting the PVC pipe and replacing the fitting. If your pipe fitting is threaded at the place of the leak , you may very well be able to stop the drip by unscrewing the pipe joint and replacing the tape . Teflon tape will work on any of these threaded fittings.

Which way does Teflon tape go?

It's real important to apply your Teflon tape in a clockwise direction which coincidently is the same way you thread on most of your fittings.. If you apply the tape in an anticlockwise direction it will unravel as you screw on the fitting which will render it useless.

Which is better plumbers putty or Teflon tape?

Teflon tape gives a reliable seal on threaded pipe joints for liquids and gases that may be under considerable pressure. Plumber's putty acts as a flexible caulk in situations where you need water resistance—but it cannot withstand any significant pressure.

What can I use instead of Teflon tape?

Pipe joint compound, also known as pipe dope, is a liquid compound used to seal threads similar to Teflon tape . The cap of the container has an attached swab brush used to brush a layer of the compound on the threads of the pipe before attaching a fitting.

What's better than Teflon tape?


Pipe dope is easier to apply
Dope stays gooey. Pipe dope never hardens, so it will never become brittle and flake out of a joint. Although using pipe dope can be a bit messier than sealing with Teflon tape , it's faster. Similar to Teflon tape , pipe dope comes in versions designed for water lines and for gas lines.

Is Teflon tape the same as plumbers tape?

Thread seal tape (also known as PTFE tape , Teflon tape , or plumber's tape ) is a polytetrafluoroethylene (PTFE) film tape commonly used in plumbing for sealing pipe threads. The tape is sold cut to specific widths and wound on a spool, making it easy to wind around pipe threads.

What is GREY Teflon tape used for?

TALON Gray PTFE TAPE will never harden, and is an anti-galling tape making it possible to disassemble pipes and bolts easily after years of service. Excellent for threaded stainless steel applications.

Can you use Teflon tape on compression fittings?

The bolts have to be tightened evenly. Thread sealants such as joint compound (pipe dope or thread seal tape such as PTFE tape ) are unnecessary on compression fitting threads, as it is not the thread that seals the joint but rather the compression of the ferrule between the nut and pipe.

How do I seal BSPP threads?

About NPT and BSP threads
  1. Always use some type of sealant (tape or paste) and apply sealant to male thread only.
  2. When using tape sealant, wrap the threads in a clockwise motion starting at the first thread and, as layers are applied, work towards the imperfect (vanishing) thread.

How do you wrap Teflon tape?


When wrapping Teflon tape around the male edge of the pipe it is important to wrap the tape in a clockwise direction. To do this, hold the pipe in your left hand, or have the pipe to your left side if it is a mounted pipe. Put the tape on the threads and run the tape around the threads over the top of the pipe.

How many times do you wrap pipe tape?

As for the number of layers - I usually wrap the tape around at least twice, maybe even three or four times . For the correct number of times to wrap the tape , check the instructions on the tape package (that tiny little printing in white plastic you can barely read). It should tell you .

What's the difference between red and blue Teflon tape?

White tape is single density and intended for water pipes of 3/8 of an inch or less. It can sometimes be found in a silver color to match the pipes. Red tape is triple density, for pipes one-half inch to 2 inches in diameter. It is designed for pipes with larger joints, such as water distribution pipes.

How tight should water supply lines be?

One of the biggest problems when swapping out water supply lines is knowing how tight the connections should be. Obviously this is important to prevent water leaks. Most directions say to hand tighten then use a wrench for the last 1/4 to 1/2 turn.

How many layers of plumbers tape?

is there a number of turns recommended on placing teflon on a pipe. You always want to wrap seal tape around threaded pipe fitting in a clockwise direction. In most cases for a new joint you should apply only two or three wraps of tape .

Do I need to remove old Teflon tape?


Over time, the material may become slippery and difficult to remove . To get rid of old Teflon tape so you can reconnect pipes and use them again, you'll need a petroleum-based solvent to dissolve the material.

Is plumbers tape necessary?

Plumber's tape is recommended for use with most threaded connections that don't have a built-in rubber seal. If you're familiar with using pipe-joint compound (a.k.a. pipe dope), you can substitute with plumber's tape in the same applications.

How do I stop my brass from leaking?

Using a plumbing sealant for leaks is usually effective and would put a stop to the leaks from your threaded brass fittings . Many brass fittings are connected on copper pipes using a compression fitting , which is composed of a ferrule (inner compression ring) and an outer compression nut.
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