ERRECOM EXTREME ULTRA Ultimate only 6ml Leak Stop for AC/R systems What is it? EXTREME ULTRA is an ultimate Refrigerant Gas Leak sealant that solves all the problems related to small refrigerant gas leakages in AC/R systems. After more than 4 years of R&D efforts and thousand of tests, Errecom projected a 6ml dose leak stop that can work with all types of refrigerant gases included R32 & R1234yf, EXTREME ULTRA 6ml new formula treats A/C and Refrigeration systems up to 21KW (6 tons). EXTREME ULTRA locates the refrigerant gas leaks and permanently seals them, without reacting to moisture and oxygen. EXTREME ULTRA is a polymer-free solution that repairs leaks up to 0.3 mm. Benefits: Only 6ml can treat A/C & Refrigeration Systems up to 21 KW (6 tons) . New advanced formula Less product in the system Permanently seals refrigerant Gas leaks both in metal and rubber components of A/C and Refrigeration systems. Safe to AC/R system components. Harmless to recovery unit components. Non reactive to humidity and air. Polymer-free. Visible to any UV lamp. Not flammable, Not irritant, Safe for the operator. Compatible with all refrigerant gases included R134a & R1234yf Significantly reduces compressor noise. Ideal for preventative maintenance.