HVAC technicians and DIYers, this Enviro-Safe ProSeal XL4 is a game-changer for fixing refrigerant leaks! The injectable design makes application super simple - no hoses, caulk guns, or special tools required. It's compatible with all refrigerants except ammonia, so it works in most residential and commercial systems. The formula actually travels with the gas to find leaks faster and create durable seals in condensers, evaporators, fittings, schrader valves, and metal line sets. What's really clever is how it releases the schrader valve seal upon connection but leaves residual sealant to reseal it afterward. Perfect for heat pumps, split systems, mini-splits, packaged units, and even tricky microchannel coils. The concentrated formula means you're putting less material into your system while still getting effective results. With over 28 years of sealant expertise behind it, you know this is a proven product that actually works. The one-time use design is convenient and prevents waste. If you're dealing with small leaks that are expensive to locate and repair traditionally, this sealant can save you significant time and money. It effectively seals most common leaks when used according to instructions, reducing refrigerant emissions and improving system efficiency. Whether you're a professional technician or a knowledgeable homeowner, this reliable leak sealant belongs in your HVAC maintenance toolkit. It's saved countless systems from costly component replacements!
Free 30-day returns 
Free 30-day returns
