In the A/C and refrigerant systems EXTREME, both Automotive and HVAC, Extreme stops the refrigerant gas leaks up to 0.3 mm in size, without reacting with moisture and oxygen. EXTREME is suitable for all refrigerant gases, including HVAC sectors – CFC, HFC and HCFC. BENEFITS Seals every leak in the system. Visible when exposed to every UV lights. Suitable for leaks up to 0.3 mm. Polymer-free! Safe for the compressor. Reduces compressor noise. Compatible with all refrigerant gases.