Extreme Ultra | A/C Leak Stop for HVAC/R Systems Up to 6 Tons (21 kW) | Works with All Refrigerants and Lubricants | Includes 1/4 SAE and 5/16 SAE Adapters | 0.2 fl oz (6 mL) Cartridge

Excelente producto, tenía una fuga de gas en mi unidad de aire acondicionado, llenaba el gas y a la semana ya quedaba si gas, aplicamos este producto con una carga de gas completa y ya llevamos mas de 3 meses y la fuga está controlada, me salvo de cambiar toda la tubería o hasta de cambiar la unidad porque al parecer la fuga estaba en el compresor y era muy complicado de reparar y en un equipo de 10 años casi ya no valia la pena, así que este producto le dió tiempo extra a la unidad.

It's an excellent product, easy to use and fast-acting. I recommend it.

After i put this seal to a/c inverter 2 months ago is work good no more leak.

still under test I installed solution in my system which was really easy to do. then added 410 gass. Its been a week and ductless ac seem to be cooling normal so far.

Really work..!

I was able to use it on the home AC to stop a small leak without having to redo the copper piping. Once you lower the pressure in the system then you are able to get the entire leak stop fluid inside with ease, Once you recharge and you run the system it will find the small leaks and stop them, you just can't expect it to perform any miracles on major leaks. Easy to use and saves you a lot of headaches on small minor leaks. It is a great value for the money if you can get it to work on your leak. So far so great no loss of pressure in the system after a couple of months. It is very hot now in Florida so a working AC system is a requirement to support the hot summers.

Didn't work at all! Trash!

Only good for units you can valve off, not package units of any sort.