R404a, R-404a, R404, (2) 28 oz. LEAK STOP, Pro-Seal XL4, Good For Up to 5 Tons

R404a, R-404a, R404, (2) 28 oz. LEAK STOP, Pro-Seal XL4, Good For Up to 5 Tons shake can well before installing. Invert can (turn upside down) when charging so stop leak agent flows with the liquid refrigerant. Charge only from the low-side of the system. No certification is required to purchase R404A Refrigerant R-404a, also known as HP-62 and FX-70. (2) Two 28 oz. Disposable cans. Alternate for R502.  Two disposable cans of Refrigerant R-404a. Refrigerant R404a is used on coolers and freezers. (2) 28 oz. Cans of R-404a with a 1/4" male flare fitting on top with internal valve core and brass cap as pictured. Each can is 24 ounces Refrigerant R404a &  4 ounces Pro Seal XL4 28 oz. Total In Each Can ProSeal XL4 is designed for repairing leaks in condensers, evaporators, copper line, and solder joints.  ProSeal XL4 is a product with epoxy that reacts to water and air.  When coming in contact with the atmosphere, it forms a seal over the leak.   If your system stays charged for