We have the HVAC-R sealants you need to repair your refrigerator, HVAC unit, or other appliances. Sealants are used to stop system leaks from the inside, particularly in situations where the leak is difficult to access or would otherwise be expensive to fix. Some sealants are given ton ratings based on the size of the system, ranging from 1.5 tons to 5 tons. They are versatile and can often be applied to many different units and materials. We stock Vapco, Xantus Products, Nu-Calgon, RectorSeal, and Leak Lock products.