How To Correctly Wrap Teflon Tape
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- Опубликовано: 8 май 2024
- The thumbnail picture shows how not to wrap teflon tape. This video demonstrates how to correctly use and wrap teflon tape on pipe threads. use this amazon link to purchase the best ptfe tape on the planet amzn.to/49JZ9uK
My name is Tony, I have been a master plumber for over 30 years! Due to a plumber shortage nationwide, it is the mission of this channel to help others learn the trade. We will be uploading tutorials on popular plumbing needs as well as tips & tricks. Like, comment, and subscribe to our channel!
For purchasing of the system in this video please visit and contact us masterflowplumbingrepair.com
Important Disclaimer:
Master Flow Plumbing Services and this RUclips channel are not responsible for anyone attempting anything shown in these videos. Plumbing repairs should always be performed by a license plumber, even the simplest plumbing repairs can cause damages in injury to you or others.
If you are doing plumbing work at home, make sure to research safety procedures before beginning. 
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The picture on the cover ....the wrap is backwards ....
its just a stock thumbnail .. sometimes the camera can reverse the image but in this case i think your right ,, great eye
@@masterflowplumbing9812 you're right
Not the best way to introduce your channel!
I was going post ‘not per the thumbnail’
It’s clickbait for the perfectionists and those who notice detail
Several items I see, first by having the tape extend past the threads you run the risk of having the system contaminated by the debris coming off, especially if you are working on a truck air system . Second, have the threads of the fitting come out of your hand by your thumb with the tape in your other hand on whichever finger is comfortable with the tape coming off the bottom of the roll. Wrap the tape over the top following the direction of your fingers. It's easier to pull the tape tight. I start about 2 threads back from the end and on the 2nd wrap I'll move closer to the end, but not past. I'm a heavy truck/trash truck mechanic with lots of air system and hydraulic systems for the last 45 years. If I had 5$ for every roll I've used I'd be wealthy.
Thanks for sharing your experience with air and hydraulics. We definitely intended for this technique to apply to water line only. Thanks for watching
I agree with Cbmech. I'm a retired hydraulic system design engineer so when our prints went out to the shop floor, a note was always included to NOT wrap the Teflon tape over the end of the fitting/pipe. As the fitting is tightened inside the female fitting, any tape over the end of the fitting can be cut loose and end up in the hydraulic fluid stream. This is very problematic for downstream valves, especially close tolerance valves. And devastating for servo valves typical on CNC machine tools and close tolerance actuators.
@@masterflowplumbing9812 personally I wouldn't want pieces of tape floating in my water supply either.
Plus, anything past the first thread would do little nothing to improve sealing.
@@nealvance8701 anything cut off and left in a pneumatic system, like in a truck air brake system, would tend to cause problems in the air valves. Step on brakes and a relay doesn't open......oops 😬 crunch.
learned something new. Very clear. Thanks
I do appreciate the information and I especially like that actual plumbers making videos here agree with each other on the basic stuff that might be new to people like me. That gives me a lot more confidence to attempt a simple repair. I'm still wondering about the set up time after you apply the pipe dope to a fitting. I would think it might make a difference.
No set up time in the green stuff. It actually stays soft for years. Thanks for the compliments. And thanks for watching.
Always good to know!
Thanks for the information
Great info. Thanks.
After 25yrs of plumbing, I start at least one or two threads back. Tape can easily rip if at the edge, just check your faucet aerator you will see it there.
Legend! Thank you for the advice.
Thanks for watching
Good stuff!
I am an amature DIY'er and a couple of days ago a leek sprung in some really ancient under the counter taps from the threaded nuts. I had to apply what we call in England PTFE tape (same thing as the white tape in this video). Because of the restricted positions of my taps I had a real struggle getting the tape on cleanly because it kept seperating and also bunching into almost string like. It took a few attempts. Working vertically with those taps because this is how they are positioned I basically looked at the direction of the nut as it would be tightened and I ran the tape in the same direction. Yes it it clockwise but when upside down it appears anti clockwise. Does my head in. So I would say, wrap in the same direction the nut goes on. My pennies worth. Great video and funny how RUclips recommended it two days after my flood. Someone is listening in, but I don't mind when it comes to tutorials like these.
Glad we were able to help
Thanks! Only did 2 wraps on a hot water tank and both leaked. 4-5 was the ticket!
Thanks for watching
Excellent. Thank you.
You are welcome!
Your way is the way I learned it years ago, but a new acquaintance says he thinks everyone does it wrong and I should roll it like a little Teflon string and put that on the tread, so here I am re-affirming that your way is correct.
Thanks Eddie.
Nice work and video, but for gas(yellow tape) and air lines I was taught to start a thread away from the beginning.
your not wrong.. on air or gas that would be correct ,reason for it is so loose teflon shreds do not travel to sensitive equipment like air tools and gas control valves ..for water pipe though i was taught the method in the video.. thanks for pointing it out i should have mentioned it in more detail
Thanks 👍
it helped me to do it right.thanks
Your welcome
So the tail is left at the left if it's right hand thread and the opposite for the opposite.
You are the king of wrap! Is it okay to use yellow tape on a copper water pipe connector?
I’m sure it would be ok
I’m sure it would be ok. Thanks for watching
How many extra layers do you recommend if counterclockwise? I have been doing about 5 -6 because of this. I tried doing a clockwise several times for many years, I just can't get it tight enough
You have to stretch it tight as you wrap it
Is it always clockwise to the direction facing you even if you have to turn the pipe around in order to put it into the wall? I am sorry for the stupid question, I just never did this before.
Yes always clockwise looking at the end of the thread
Can you use other sealants on gas stove fittings
Of course. In fact the Teflon tape I use in this video should not be used for gas. They make Teflon for gas but it’s yellow in color. Any Teflon based thread sealing paste should be great for gas piping
A friend introduced me to green Teflon tape and that’s all I use. It’s for oxygen and it’s much thicker, less wraps, seals better. Years ago I could not seal a drain on a disposer drain. The drain was lower than the wall drain. An old drain specialist plumber helped me and we used Teflon tape and Teflon paste together, I worked 3+ hours and it still leaked, after 10 minutes we were done. Today, 3 years later, still works and does not leak. This drain is 2” blow the wall drain. I have always used the Teflon paste, yet you never mentioned it, how come? Thanks…Jim
I don’t talk about paste too much because the video is simply about applying Teflon tape.
thanks
You're welcome!
❤thankyou
Your welcome. Thanks for watching
I had always been told that pipe dope or teflon tape were only placed on threads in order to enable the joint to be unscrewed. It is NOT to keep the joint from leaking. Properly threaded pipes without thread compound or tape, tightened to the correct tightness should not leak. If a joint leaks it is because of a defect in the threads, cross threading or improper tightening.
Very well could be true but for the last 30 years it’s been impossible to get the Chinese to follow those thread standards lol. Teflon tape and pipe dope are very necessary in todays world
I also use both, fittings are cheaper than before but they are less precise, which is ok for me if I'm not paying 10 times more for a fitting made in Italy for one that is super cheap made in China. But the game ball now is in the installer's hands.
And just for clarification, no need for tape or dope on compression fittings?
I always use dope on compression fittings threads. But not as a sealant. Rather is acts as a lubricant so I get a good torque on the fitting nut. Never Teflon a compression fitting
Your clockwise is ccw from the pipe thread perspective, and vice versa, no?
Don’t matter how you look at it I’m wrapping clockwise. The thumbnail is incorrect on purpose
Wow didn't even know there were two types
there are actually 3 types counting gas pipe teflon tape
More than 3 types , pink , green for different pipe like medical, oxygen etc
Clever of this guy to have the thumbnail showing the tape being wrapped the wrong way..
Thanks for understanding
For plastic piping, is it also recommended to put teflon tape? Thanks for the info.
Never use tape on pvc
Just go to pvc manufacture website. Use pipe sealant
Saw it wrapped backwards on “This old House”.
The last time a plumber did work in my house he told me he doesn't use and doesn't recommend using Teflon tape. Instead he prefers the old vegetable fiber stuff (hemp). I think his argument was that the fiber expands in contact with water, improving the seal.
Seems to be about personal preference. I have mosstly seen the linen fibers or loctite thread sealant depending on personal preference and and conveinience in the specific application.
You shouldn’t use hemp on potable water, but I must agree hemp provides a better seal
@@paulwoodward4999 Should you use PTFE on potable water? HAve heard alot of debate concerning wether you should even use PTFE in industrial lubricants.
@@rimmersbryggeri as far as I’m aware you can. I’m retired now and regulations change often. When I started plumbing in the late sixties we used hemp and boss white on potable water pipes. It formed a great seal. Back then most people were drinking from lead pipes and were for many years Too many regs now constantly changing
@@paulwoodward4999 Yeah I know. The old guys like the linen (flax) fibres they use here. But I gueess mostly on radiator pipes. I like the heavier ptfe or anareobic/water curing thread sealant depending on how difficult the space is to get into. I live in sweden so regulations might be very different from where you live. Whave used iron and copper pipes for a very long time as far as I know. They did use asbesthos reinforced ventilation pipes though up to the 60's.
The other video I just saw the guy said to never overlap the thread openings!
If your using it on air or gas lines you should not but for water and drains I find it works best
Just gotta ask , why do you show the teflon tape being put on the threads in THE WRONG DIRECTION in the video's add page on u-tube?
Because your supposed to watch the video to learn the right way. It’s in the description.
Interesting the picture on the video link has the roll the wrong way 8^)
That’s why your supposed to watch the video. Thumbnails can be misleading
Actually works?
Yes thanks always good to have refresher on stuff...I'm a time served malty tradesman. MTM..I live in jersey channel islands uk..run to big sites here .for a companie.there's so many issues here with bad workmanship as a lot of construction is happening but all the island types of none time served tradesman doing skilled work that they shouldn't be doing because of the rules and permits and checks..you have seen nothing like it mate..I've been here 3 years now...shocking....plumbing in wrong no stopcocks..just wrong ..let alone others building crap ..a lot of it is they have people come from all over Europe that are not checked or experienced..but totally getting away with it..but still getting big money and paid for the work as the idiots don't know any better...anyway thanks again..check jersey channel islands uk out ...very expensive here one big off shore bank account..👍🇯🇪🇬🇧
thanks for watching and commenting
@2:30 Clockwise or anti-clockwise depends on whether you are right-handed or left-handed, and also depends on your POV, i.e. from the front or the back end of the pipe. It's more important to SHOW what happens when done the right and the wrong ways instead of just memorizing "always clockwise", and to visualize how the pipe is going to fit before doing the wrap. A southpaw would do it wrong all the time if what he learnt is to always wrap it clockwise.
Clockwise is clockwise whether you’re left handed or right handed or standing on your head
@@paulwoodward4999 To people with no analytic skills, yes.
Just hold a pipe (or just a pen) in your left hand and wrap it clockwise with a strip of paper with your right hand, and hold another pipe in your right hand and wrap it the same way with your left hand, then compare them and tell me they are exactly the same.
I don’t have to think about it. Whether I’m holding pipe in left or right hand all the same to me. Just look at the threads. Experience plumbers will know that
@@paulwoodward4999 But if an inexperienced lefthander learn from this video, he'll do it wrong all the time.
@@tkjho just wind the tape in the same direction of the thread it’s always clockwise. Easy whichever hand or experience
The illustration before the video starts shows the tape wrapped counterclockwise.
That’s why you watch the video. It’s RUclips not thumbnail tube.
The photo at the beginning is misleading unless you’re taping a left hand thread
It's a good thing you aren't working on hydraulics, never, never wrap it at the end, it will shed it's excess and damage, plug, areas in the system, as well be very, very careful and don't over tighten as it is acting like a lubricant and can split fittings, joints etc.
Do hydraulics use pipe threads ?
@@masterflowplumbing9812 yes, in places NPT are still used, but becoming less prevalent, mostly on a return line circuits, but still Teflon contamination is contamination.
On the thumbnail you are winding it the wrong way.
we are aware of that ..its not me wrapping it its just a stock thumbnail ..the wording is whats confusing. i think it needs a red x or something.the intention was to show the pic as a not to do thing
In the past (the real past) plumbers used HEMP.
I'm thinking you'd be too young (or stupid) to remember HEMP.
A little later some finger coated their hemp with graphite grease _ probably to tighten the joints more..
👍you and I are speaking about before Teflon tape and pvc pipe?? We used what was called wicking!
So people who weren’t around in the old days are stupid ?
I usef ptfe 30 years ago and stopped using it 29 years ago. Too easy to unscrew and leaks. Hemp or Loctite
Same here, but goes back further than that. Started seeing Shower Arm Drop Ells Split and Cracked. Do you know how hard it is to un-sweat that fitting and Sweat a new on? Used Rector Seal #5 back then today on something like that, Loctite PTS. There is a fitting I Religiously use Teflon Tape on. That’s the PVC Threads on my Saltwater Aquarium Piping. If you don’t, you can Cold Weld the Threads, when Tightening them.
I also use hemp on the pipe threads and I find it works better.
What happens if white tape is used on gas lines?
From what I’ve always understood is that the white Teflon tape can shred and travel to sensitive gas equipment. On gas pipe I always use pipe thread compound. I like a particular one called “green stuff” made by jomar. If you use Teflon tape on gas make sure it’s rated for that and meets local codes. The green stuff. It not only seals good but it also acts as an anti seize and allows for proper tightening by lubricating the threads before tightening.
@@masterflowplumbing9812 If you want to kill a hydraulic control system, use that white PTFE tape in the threads. Turns a simple job into a major.
I wind the reel of tape around the fitting rather than the cack handed way you turned the fitting around the tape
Your way is great if you can’t hold the pipe nipple in your hand. But if you can why would you do it your way. Your way is not the only right way. And yeah the thumbnail for this video is showing it incorrectly you win the prize for the 1000th person to notice that. Congrats
@@masterflowplumbing9812 I would still do it my way if holding the fitting. The sarcastic comment at the end of your reply was rude and unnecessary
@@paulwoodward4999 I’m sorry sir. I didn’t intend to hurt your feelings. Just trying to lighten the comments with sarcasm is all. I actually liked your exchange with the other viewer. Thanks for watching and my apologies for my sarcasm
@@68motopro no problem. I enjoyed my exchange with the other guy but found it frustrating after a while. Couldn’t deal with it if he were my apprentice
Sorry I disagree that over lap is not good Teflon shred’s off! Then works it’s way into valves! Filters,strainers and what ever
Sorry you disagree. I’ve been doing it for decades and never had that issue. Once again I’m amazed at how many experts in this subject are watching a how to video
I am also a licensed plumber got my ticket in 1969 ! Speaking from almost 60 years experience!
@@johnamerican1578 why would you be watching a how-to video with 60 years' experience. lol
Greg s
I saw the clip on utube though I would watch maybe learn something new ! I have seen lots of changes since 1964 !! Not all good 👍
Yes, that's why I use teflon tape instead of pipe dope.I dont want sealant getting lodged in my sensitive valves and plugging them up.Never overlap tape past the threads it can break off over time and will get caught in something downstream.
other videos say don't overwrap at the opening.
If it’s being used for drain or average water supply it’s not a concern. In hydraulic or air systems it certainly can be.
Teflon-tape? Maybe for emergencys but other than that 3M or Loctite makes nice sealent that locks/glues the same time as it seals...
lol
Your first picture shows it being wrapped the wrong way
We are aware. The thumbnail is incorrect on purpose. You’re supposed to watch the video to learn the correct way. We don’t endorse going on RUclips for the thumbnails. Watching the video is key.
He did it correct in the first instance but incorrect in the second instance. It amazes me how many of these dopes, even pro's, don't have a clue as to how to hold the dispenser to properly wrap a pipe or fitting. The majority of the time one cannot rotate the loose fitting in one's hand as shown, you're going to have to wrap a stationary fitting. This guy's technique is totally wrong (@3:59). That's NOT how you wrap a fitting, it's the opposite.
You sure about that? At 3.59 I’m am wrapping it in a clockwise manner we can debate the overlapping technique all you want. 30 years of doing this I’ve wrapped an awful lot of it hard to believe I’ve been doing it wrong. Opinions and techniques may vary. Thanks for commenting.
B Thomas is correct but not explicit. Masterflow wrapped both the blue and white correctly clockwise on the pipe, but with the white had the tape roll reversed on his finger. Often you hold the pipe still, or it is already installed, and you use your "spool holding" finger to wrap the tape around the pipe (instead of rolling the pipe). You have to "brake" the spool with your thumb and fingers of the winding hand as you wind to keep the proper tension on the wrap. If you hold the tape spool as in the white application, the tape unrolls too fast, is difficult to brake, and the spool gets awkwardly farther from the pipe with each turn. Holding it as done with the blue in this video, each wrap of your hand winds the tape back onto the spool as well which you can then easily release as necessary by loosening your "brake" to keep the proper tension, "paying out" just the right amount of tape, which is especially helpful in cramped installations. Agreed, it's surprising how many professionals have not discovered this difference.
Since plumbing pipe threads are tapered, the thickness of the tape vs other sealers generally doesn't matter, the threads just don't screw as far in, unless you are not getting enough turns because of improper thread cutting.
As you mentioned, I don't like the tape overlapping into the flow area because often the connection cuts the overhanging tape and it ends up stuck somewhere down the line. If your wraps have not sealed the joint, the overlap wedging into the first thread probably won't make much difference and the risk of a clog seems like a risk, with little, if any, return, that one doesn't need to take.
Thanks for posting. This discussion will surely help many.
It's funny that your thumbnail "still" picture...that makes us want to open the vid..... shows improper wrap direction......
Funny your about the ten thousandth person to point that out. Do you go on RUclips for thumbnails ? Or the videos? Me? Im in it for the videos. But that’s just me. I do gotta admit I’ve been fooled by a lot of thumbnails myself.thanks for watching. Cheers!!
Thumbs down from showing it WRONG on title page and contaminated with Teflon AND tape, in the flow
Thanks for watching even though you already had the expertise.
Clockwise not Counter Clockwise.
I wrapped clockwise in the video. What’s with you people who only look at thumbnails
Why would you even screw metal into plastic?
Copper to pvc! Galvanized to pvc ! Water softeners can have plastic threads but houses sometimes are copper. It’s called transition
@@masterflowplumbing9812 yeah, I get that, but I was speaking of metal (male) threads into plastic (female) threads.
This connection is bad news and a rookie move. I thought you were a "master" 😜
Anytime you make the transition, male plastic into female metal is a stronger connection.
Anytime I transition from copper to PVC, I use a Sioux Chief (copper/PVC fitting) instead of adapters.
I suppose, that you have seen the news about how PFAS has become a major environmental issue around the world. Nine states in US have made very strict regulations to counter PFAS in environment. Several places have got PFAS in drinking water. Therefore we all shall make an effort to avoid using Teflon (PTFE), because factories that produce Teflon emits PFAS. So I would like you to promote alternative ways to seal pipes.
im curious what you would suggest? In 30 years of being a plumber i just know when you need it you need it.. shoddy Chinese manufacturing has led to loose tolerances on threaded pipe fittings.. We use to use just pipe joint compound when plumbing fittings were made in America. In the 1990s when American manufacturing was sold to china the use of PTFE tape really took of out of necessity.. you should write a letter to the Clintons
i did google your concern and found this info : People also ask
Is PTFE tape toxic?
(PTFE) is inert, barely reacts with anything, and is non-toxic.Jun 1, 2022
Viggo. The phone which I'm sure you're typing your concerns on. Emits frequencies that cause cancer in California. So I suggest staying out of California. ;)
@@masterflowplumbing9812 I agree, that PTFE itself is not toxic. As I wrote.. it is the factories that produce PTFE, that emits PFAS - so this is an important difference.
@@CharlesMaley1987 There is a reason why there is a lot of concern regarding PFAS - very good scientific research. But people that suggest mobile phones cause cancer is very much alone and not recognized by science community.
The thumbnail shows Teflon tape applied incorrectly. It’s backwards!
Wait a second .... Was that the clickbait, and I just fell for it?
Ding ding ding. You win the prize for the 100th person to notice the thumbnail is incorrect
You’d think they’d change the thumbnail by now
straightforward and distinct audio.
Blue teflon tape is better than the white Teflon tape
I agree 100%
Master plumber, are you sure ? The most important thing with tape is rough the thread first . Putting thread sealant over the top of tape is useless. Never use pipe sealant on plastics . It tells you on the tubes .
So it says that on the sealant you have so you think that means all sealants ? And rough the threads ? Lol. Who taught you that ? I’ve never heard of it.
Never heard of roughing the thread . Well I am glad I could teach the master plumber. That must make me the master of master plumber's.
Thanks for watching
Indeed, that what I am missing, rough the thread first.
Seriously over 5 mins to tell how to install Teflon tape?
Thanks for watching
NOO. WRONG! DO NOT OVERLAP tape at the end of the pipe. Not necessary, and if a sliver of tape gets cut off, it can dislodge, and float and possibly travel to a place in the system where it can cause problems.
Funny I’ve been doing this for 32 years never had an issue and yet here you are an expert on the subject and your watching RUclips videos on how to do the very thing your expert at. Kinda ironic isn’t it ?
Maybe it's OK on domestic water systems, but I've been assembling hydraulic systems for over fifty years and we ALWAYS leave the first thread bare. As Paul B
noted, a tiny sliver of tape can cause problems with valves and other components.
👍I agree 100%
One very important question is do you know JESUS CHRIST AS YOUR PERSONAL LORD AND SAVIOR?
Yes I do
this method is what gives teflon tape a bad name. Good thing he is a plumber and not in the Fluid Power world.
Yeah good thing. Otherwise the word plumbing after my name would make zero sense. Troll.
Stop putting the tape beyond the end of the thread. This is a mistake.
Not a mistake. But thanks for watching.
@@masterflowplumbing9812 It’s wrong so I think mistake is appropriate .
Too complicated. Better call Joe the unlicensed plumber.
lol. That made my night. Thanks for watching
That’s not the best way sorry I have 42 years experience
Then why are you watching how to videos ?
@@masterflowplumbing9812 You don't have to be a jerk !! I also just watched for the hell of it but I use hemp on the pipe threads and I find it works better.
I also just watched for the hell of it but I use hemp on the pipe threads and I find it works better.
Nice 2 minute video compressed to over 5 minutes. Bla, bla, bla…
Thanks for commenting. But wouldn’t it be “expanded ” rather than compressed ?
@@masterflowplumbing9812 True, but that’s my poetic license way of saying it’s worth about two minutes. Too many other words in the video. Yet, over all, thanks for educating people.
You're welcome.
@@masterflowplumbing9812 “YOU’RE” welcome. (Damn autocarrot)