Used in over 2.3 million A/C units, our formula has been the most trusted in HVAC for the last 17 years.
Able to be installed with a standard manifold and gauge set or our XP Direct Inject Gun, it has never been easier to stop refrigerant leaks in your A/C system! Since it is designed to travel in the gas and not the oil, it responds quickly to leaks and won't clog your system or gauges. Once injected, if there is a leak, Maximum Seal XL4 will activate on contact with atmosphere to form a permanent seal over the leak.
This product is designed for use in: