TSI Supercool Total Leak Stop & U/V Dye, 1 oz HFC‑Free Can with Adapter — No‑Polymer A/C Leak Sealant

TSI Supercool 39241B Total Leak Stop and U/V Dye is a one-ounce, HFC-free aerosol solution formulated to locate and seal small refrigerant leaks in automotive air conditioning systems without polymers that can clog components.

This compact retail kit combines a patented HFC-free propellant can with built-in U/V dye and an adapter for easy application into A/C systems. Designed for pinpointing slow leaks in evaporators, condensers, hoses, gaskets, and seals, the formula avoids polymers so it won’t gum up recovery, reclamation machines, or delicate system passages. The product offers a simple one-can-per-vehicle approach and is covered by US Patent No. 8,047,009.

How does this product help identify and repair small A/C leaks?

TSI Supercool 39241B uses fluorescent U/V dye to make slow leaks visible under a UV lamp while its leak-sealing chemistry flows to the leak site and helps reduce the escape of refrigerant. It is intended for minor leaks and seepage, not catastrophic line breaks or major compressor failures.

• Fluorescent dye highlights leak points under UV inspection for quick diagnosis.
• Sealant particles travel with refrigerant to the leak location where they assemble to reduce loss.
• Non-polymer formulation minimizes the risk of residue or clogs in system lines and service equipment.
• Small one-ounce dose provides a controlled, vehicle-specific application.

Will this can damage my A/C system or recovery equipment?

The formula is explicitly engineered without polymers, which are the primary cause of clogging and equipment contamination in some stop-leak products. Because it’s HFC-free and formulated to industry standards, it’s compatible with common vehicle A/C system components when used as directed.

• No polymer additives that can build up on or block valves, orifices, and lines.
• Safe for use with standard reclamation and recovery machines when service instructions are followed.
• Engineered to meet TSI Supercool internal quality and compatibility checks.

How do I use the can and adapter—what should I expect during application?

The kit includes an adapter to connect the 1-ounce HFC-free can to service ports for controlled introduction of dye and sealant into the system. Application is straightforward for trained technicians or experienced DIYers familiar with vehicle A/C service procedures.

• Connect the adapter to the low-side service port following safety procedures and vehicle manufacturer guidelines.
• Introduce the can’s contents into the system in short bursts or per the instructions until the one-ounce dose is delivered.
• Run the A/C to circulate the dye and sealant; inspect for fluorescence at suspected leak points with a UV light.

What limitations should I be aware of before buying?

This product targets small leaks—slow seepage and microleaks—rather than large ruptures or failed compressors. It won’t replace professional repairs when mechanical components are badly degraded, and performance can vary with leak size, location, and system condition.

• Not intended for major hose ruptures, large fittings failures, or catastrophic system damage.
• Effectiveness depends on proper circulation and locating the leak with UV inspection.
• Follow vehicle-specific service intervals and procedures; consider professional diagnosis for persistent issues.

Who is this for: TSI Supercool 39241B is aimed at automotive technicians, maintenance professionals, and informed DIYers who need a compact, non-clogging solution to locate and address small A/C leaks. It’s especially useful when a one-can, vehicle-specific treatment is preferred, and when fluorescence-assisted leak detection is required without introducing polymer-based residues into the system.