Nu-Calgon EasySeal Ultimate SS refrigerant leak sealant 0.1 oz vessel — concentrated, treats up to 10 tons

Nu-Calgon 4050-05 EasySeal Ultimate SS is a professional-grade, concentrated leak sealant that quickly seals refrigerant leaks and treats systems up to 10 tons in a single 0.1 oz vessel.

EasySeal Ultimate SS builds on the trusted EasySeal line to offer a faster, stronger solution for HVAC/R technicians. This concentrated cartridge allows you to introduce less material into the refrigeration or air-conditioning circuit while providing visible flow through the clear tube. It is formulated for use in split systems, heat pumps, microchannel coils, packaged units and mini splits and is compatible with modern refrigerants when applied by trained service personnel following all safety regulations.

How does EasySeal Ultimate SS work to stop refrigerant leaks?

The product is injected into the system where circulating refrigerant carries the sealant to leak sites. The formula reacts at leak points to form a flexible, durable seal without clogging system components when used as directed. Because it’s concentrated, a small dose treats larger systems efficiently.

• Concentrated formula reduces overall material introduced into the system
• Clear cartridge enables technicians to observe product flow during application
• Designed to travel with refrigerant to reach remote leak locations

Can one 0.1 oz vessel treat large systems up to 10 tons?

Yes — EasySeal Ultimate SS is engineered so a single 0.1 oz vessel can treat systems up to 10 tons in one application. That capability makes it practical for many commercial and larger residential units, reducing downtime and repeat service visits when used correctly.

• Treated capacity rated up to 10 tons per vessel
• Reduces need for multiple charge additions on larger systems
• Works in a single-pass application when service instructions are followed

Is EasySeal Ultimate SS safe for different system types and refrigerants?

It’s formulated for a wide range of system types, including split systems, heat pumps, microchannel coils, packaged units and mini splits. The product should only be used by professionals and in accordance with all manufacturer recommendations and regulatory requirements. Consult the product label or Nu-Calgon technical resources for compatibility with specific refrigerants and system architectures.

• Suitable for split systems, heat pumps and packaged equipment
• Approved for use in microchannel coils when proper procedures are followed
• Professional use only — follow label instructions and PPE recommendations

What are the practical benefits for a service call?

Technicians gain speed and efficiency: less material to handle, a visible feed through the clear tube, and no need to pump down certain R-410A systems. The concentrated nature of the sealant reduces time on site and inventory needs, while the product’s design minimizes potential for overfilling.

• No pump-down required for many R-410A units when applied correctly
• Clear tube gives visual confirmation of delivery into the system
• Concentrated pack reduces inventory and handling of multiple small doses

Who is this for: Nu-Calgon 4050-05 EasySeal Ultimate SS is intended for HVAC/R professionals and service technicians who need a fast, concentrated leak-sealing option for residential and commercial systems up to 10 tons. It is not a consumer product; proper training, adherence to local regulations, and use of personal protective equipment are required. For application steps, refrigerant compatibility, and safety guidance, always consult the product label or contact Nu-Calgon technical support before use.