ProSeal XL4 Direct Inject| HVAC Leak Sealant

ProSeal XL4 Direct Inject is a small, concentrated, one-time-use refrigerant leak sealant designed for HVAC professionals. Built on over 17 years of proven technology, this product is engineered to seal small leaks in critical system components, helping reduce energy loss, lower refrigerant emissions, and extend equipment life.

Applications: Heat pumps, split systems, mini-split units, packaged units, microchannel coils, coolers, and commercial HVAC/R systems.

Why choose ProSeal XL4 Direct Inject?
Unlike many products that stay in one spot, ProSeal XL4 travels with the refrigerant — ensuring it reaches leaks wherever they occur in the system. Once activated, it creates a strong, permanent seal on leaks located in metal line sets, fittings, gaskets, and more. This performance-driven formula saves time, refrigerant, and costly repairs.

⚠️ Important Notes:

• Professional use only

• Do not use in ammonia systems

• One-time application