From the A/C Pro professionals who specialize in do-it-yourself A/C recharge kits for cars and trucks, A/C Pro Professional Formula Refrigerant with MAX-SEAL quickly brings back cool air to your vehicle and lubricates the A/C compressor. MAX-SEAL 2-in-1 Chemistry provides long-lasting sealing of typical rubber leaks in O-rings, gaskets and hoses. No corrosion additives help reduce moisture and acid buildup to shield against metal leaks.