Loctite 55 Pipe Sealing Thread Cord for Water and Gas Leak Fix - Size 150m

seals better then teflon tape and allows for some re-positioning without leaking

I ran out of original sealant. This was a perfect replacement matching original string sealant from Grohe.

Been using this for 15 years, VERY hard to find in South Africa and costs a fortune here. Cannot even find this big roll here only small rolls. My last roll this size lasted me some 10 years so I guess Im covered for another decade or more.

One is Loctite 55; the other is regular plumbers tape I twisted up. I usually spend time trying to not twist my plumbers tape. The biggest difference is that the Loctite 55 comes out a bit flat, so you cant twist the regular stuff too tightly if you want to match the Loctite 55. I tried the Loctite 55 on a new faucet I am installing, and it did not go well at all. It is really hard to get it just into the threads, but if you dont you cant tighten the bolt; it jams. I ended up removing the Loctite 55 and using regular plumbers tape. BTW, the Loctite 55 is on the right in the photo.

I had a leak in a 2 pvc supply line when I added a filter. The leak was in the threads to the filter. I had done and redone it twice with no luck stopping the leak. Then I found this sealing cord online. My gut reaction when I got it was to use more than instructed. It said 12-25 rotations for 2. So I figured that 35 would be even better. What I quickly learned was this cord somehow gets heavier as you tighten it. It became so tight after only half way on that I couldnt tighten it any more. So I started over with new cord. This time I used the max rotations of 25. I got it on, but like before it got so difficult to tighten that I barely got past half way. I figured whatever this cord is doing in the threads I could not imagine how any water could slip through. And none has. I guess like the videos show, you dont have to completely cover all the threads. I will add that I could not find that much information about thread sealing cord. Maybe I just didnt look hard enough. But I could not find much. But this stuff works! It doesnt seem to shred like Teflon tape does. It gets very fibery and stringy. Yet tough.

Turns out my older house, being at the bottom of a steep hill, has very high water pressure (120 psi or so, should be 60...eventually solved by putting in a pressure regulator). But, Before I finally figured that out, my DIY plumbing jobs involving brass threaded plumbing fixtures invariably led to small leaks that simply would not go away. Teflon tape would not work, nor several brands of pipe dope. I finally tried Loctite 55 pipe sealing thread, following advice on how to apply from youtube. This stuff works, never a problem with leaking threaded fittings from then on. After discovery of how well Loctite 55 works, I then found out about the high water pressure (yea, it should have obvious to check that earlier...my bad). But, still happy w the Loctite 55.

Used this on a couple of pipe fittings with some additional paste. And have not had any leaks. Better results than I have had in the past with just paste or tape.

Works but way over priced product.

Stopped a leak with a new water Bibb. Fantastic stuff.

I purchased an OVE bidet from Canada which has an anti-hammer valve at the wall and the threads were too long which made the valve bottom out into the new brass wall fitting I installed. I could not grind off the end as part of the mechanism is flush with the end of the valve. I tried two types of sealant as well as Teflon tape and could not seal it. I was using a 16” pipe wrench and tightened it so much I was afraid I would break the screws off the brass fitting inside the wall. I finally was able to seal it with pipe dope made for gas lines, however the valve orientation was wrong (outlet heading down but it should be up) and I was not sure the pipe dope would last in water service. I knew about the Loctite 55 but it is so expensive, well I purchased and applied the Loctite 55 it sealed right away. I only had to tighten it half as much as I tried to before, I was able to orientate the valve to the proper position which I could not do before. This stuff is terrific; my only complaint is you have to buy so much of it. Come on Loctite make some half and quarter amounts available.