EasySeal Direct Inject is a new generation of sealants. Its innovative injection method makes it easier to install than other sealants. With this new injection system, pumping down the unit is a thing of the past. EasySeal Direct Inject works with all refrigerants and oils. Concentrated formula means less material in system. It is perfect for split systems, heat pumps, micro-channel coils, packaged units, and mini splits. EasySeal Direct Inject is formulated to not plug cap tubes or expansion valves.