Refrigeration Technologies RT201B Nylog Blue 2 Pack

Amazing work never leak

Working good as expected.

A must if you are installing Mini Splits. My husband uses all the time. It helps seal the threads on the flare nipple (cooper joint).

When you buy it, it comes in a box. When you lose it in your junk pile, remember to look for a box, not a bottle. Now I have the two from the box and a new one in a shrink-wrapped bottle. I put them all together so that I can buy another one when they disappear again.

I have bought this many times before - very good product.

If you don’t use this stuff you’re missing out! Must have for auto hvac work.

I use this on flair nuts and most other threaded fittings that is used for refrigerants. Somehow it stops the most stubborn leaks the first time. One tine I came across a flair nut that had been cross threaded and it was in a very tight place to get to and was not able to re flair the tubing. So I took it a part and gooped up the crossed threads and tightened the best I could And to this day it has not leaked a bit. If you haven't used this goop yet give it a try..... still can't believe how well it works

Seal perfect cooper