RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)

Two times I had to reflare a half inch line of a line set for a mini split. Could not get it to seal. It had been 30 years since I had to flare some tubing but I never had a problem before. My neighbor with 25 years experience with high pressure lines and fuel systems could not get his three attempts to reflare and seal. Retired HVAC neighbor three times, could not get it to seal! Heard about this product. Applied it to the inside of the flare and the male part of the flare tightened it together pressurized, then vacuumed the system. No problem! Save yourself the misery even if you only use it once or twice the couple of bucks is worth it. And a neighbor just might need it sometime too....

Bezos, thanks for being so awesome that I can get anything I need. And all, i mean need. on deep i can get it in 2 seconds........ You ROCK GODD SIR thank you i mean this sincere with my heart.

Clearly the industry standard for making the final seal of flair fittings. Product produced a thin film to fill in any minor scratches and helps make a perfect seal

No leaks

I have used Nylog on numerous mini split line set threads and have had good results. I look at it as extra insurance. I know some will be for and some against the practice of using this on HVAC. Bear in mind you are not coating the flair (male or female portion with this product. If you were to do that, well yes you can run into issues. If using it as designed, it is of benefit.This product is designed to prevent the fittings from loosening. The practice of coating threads with a sealant is used across all forms of mechanics and engineering. Why? Because things like vibration, changes in temperature, pressures etc have a cumulative effect over time. This product is designed to counter the forces of use and to ensure the line does not loosen, unless you intend on loosening it.A very good product, just use it for its designed purpose.

Really good one

Works great on refridgeration fightings

Great purchase!!