Best 410a Refrigerant Stop Leak in 2025
Updated on August 2025
#1
Recommended
Free Shipping
- Concentrated formula minimizes material usage.
- Transparent tube allows for visibility of sealant application.
- No pumping required for R-410A systems.
- Suitable for split systems, heat pumps, microchannel coils, packaged units, and mini splits.
- Designed for single use.
- Effective leak sealant.
Read More
- Concentrated formula minimizes material usage.
- Transparent tube allows for visibility of sealant application.
- No pumping required for R-410A systems.
- Suitable for split systems, heat pumps, microchannel coils, packaged units, and mini splits.
- Designed for single use.
- Effective leak sealant.
#2
Value for Money
Free Shipping
- Combines a sealant, moisture remover, and UV dye for effective leak treatment in one product.
- Permanently seals refrigerant leaks without losing the entire system charge within a week.
- Compatible with all refrigerants (except ammonia) and various cooling systems including cars, central air conditioners, and commercial refrigeration.
- Easy installation process using a basic manifold gauge set; specialized injection kits are also available for convenience.
- Safe for use with all servicing tools and parts, requiring specific adapters for automotive and mini-split systems.
- Highly trusted by HVAC professionals with over 4 million units sold since 2015.
Read More
- Combines a sealant, moisture remover, and UV dye for effective leak treatment in one product.
- Permanently seals refrigerant leaks without losing the entire system charge within a week.
- Compatible with all refrigerants (except ammonia) and various cooling systems including cars, central air conditioners, and commercial refrigeration.
Read More
#3
Free Shipping
- Permanently seals small refrigerant leaks without complete refrigerant loss in under 7 days, reacting with air and moisture at the leak site.
- Compatible with all refrigerants and systems, including automotive air conditioners, refrigerators, central air conditioners, and commercial refrigeration systems (not compatible with ammonia).
- Easy installation using a basic manifold gauge set or Leak Shot Injection Kits, eliminating the need for messy syringes or hoses. Standard automotive adapters required for specific systems.
- Safe for use with all service tools and components including manifold gauges, hoses, and various valve types, with specific adapters needed for mini-splits and automotive systems.
- Recognized as a leading leak sealant with over 4 million units sold since 2015, trusted by HVAC professionals and made in the USA, backed by a satisfaction guarantee.
Read More
- Permanently seals small refrigerant leaks without complete refrigerant loss in under 7 days, reacting with air and moisture at the leak site.
- Compatible with all refrigerants and systems, including automotive air conditioners, refrigerators, central air conditioners, and commercial refrigeration systems (not compatible with ammonia).
Read More
#4
Free Shipping
- Stops small refrigerant leaks in A/C and refrigeration systems after performing a 5-minute vacuum test
- Polymer-free formula prevents interactions with moisture or oxygen, protecting HVAC/R components from damage
- Reusable system with a patented design allows for cost-effective refilling after initial purchase
- Developed by Errecom’s laboratory, trusted by HVAC technicians and OEMs worldwide since 2001
- Prevents leaks proactively, serving as an effective preventative maintenance solution
Read More
- Stops small refrigerant leaks in A/C and refrigeration systems after performing a 5-minute vacuum test
- Polymer-free formula prevents interactions with moisture or oxygen, protecting HVAC/R components from damage
- Reusable system with a patented design allows for cost-effective refilling after initial purchase
- Developed by Errecom’s laboratory, trusted by HVAC technicians and OEMs worldwide since 2001
Read More
#5
Free Shipping
- Simplifies the injection process by allowing direct access to the system using a manifold gauge set or Leak Shot Injection Kits, without the need for syringes or cans.
- Effectively seals small refrigerant leaks, restoring systems within 72 hours by reacting with air and moisture at the leak site, also offers preventative maintenance benefits by circulating in the system.
- Includes UV dye to help identify larger leaks when illuminated with a UV flashlight, making it easier to locate the source of the leak.
- Compatible with various refrigerants and systems, including central air conditioners, automotive ACs, and more; supports refrigerants like R410A, R22, R134A, R1234yf, and more.
- Customer satisfaction is a top priority, with support available for any concerns regarding product effectiveness.
Read More
- Simplifies the injection process by allowing direct access to the system using a manifold gauge set or Leak Shot Injection Kits, without the need for syringes or cans.
- Effectively seals small refrigerant leaks, restoring systems within 72 hours by reacting with air and moisture at the leak site, also offers preventative maintenance benefits by circulating in the system.
- Includes UV dye to help identify larger leaks when illuminated with a UV flashlight, making it easier to locate the source of the leak.
Read More
#6
9% Off
Free Shipping
- Permanently seals small refrigerant leaks within 7 days, reacting with air and moisture at the site.
- Compatible with various systems and refrigerants, except ammonia; suitable for air conditioners, refrigerators, heat pumps, and more.
- Simple injection process using basic tools; additional adapters may be needed for specific automotive and mini-split systems.
- Safe to use with all HVAC tools and parts, including manifold gauges and valves; specific adapters required for certain systems.
- Can be used to repair both leaks and clogs in air conditioner and refrigeration drain lines.
Read More
- Permanently seals small refrigerant leaks within 7 days, reacting with air and moisture at the site.
- Compatible with various systems and refrigerants, except ammonia; suitable for air conditioners, refrigerators, heat pumps, and more.
- Simple injection process using basic tools; additional adapters may be needed for specific automotive and mini-split systems.
Read More
#7
Free Shipping
- Seals small refrigerant leaks in A/C and refrigeration systems with a quick vacuum test.
- Uses a polymer-free formula to protect HVAC/R components from moisture and oxygen damage.
- No tools or complicated kits required; direct injection using compatible adapters.
- Prevents future leaks, making it ideal for preventative maintenance.
- Compatible with various HVAC, refrigeration, and automotive systems, including hybrids and electrics.
- Universal dosage cartridge suitable for systems up to 6 Tons
Read More
- Seals small refrigerant leaks in A/C and refrigeration systems with a quick vacuum test.
- Uses a polymer-free formula to protect HVAC/R components from moisture and oxygen damage.
- No tools or complicated kits required; direct injection using compatible adapters.
- Prevents future leaks, making it ideal for preventative maintenance.
- Compatible with various HVAC, refrigeration, and automotive systems, including hybrids and electrics.
Read More
#8
45% Off
Free Shipping
- AC Leak Freeze PRO utilizes nano particles for a robust dual sealant that effectively fills cracks in HVAC coils.
- User-friendly application with a 1/4" adapter; safe and OEM approved for HVAC systems.
- Permanently seals refrigerant gas leaks in HVAC and refrigeration systems, enhancing their performance.
- 1.5 oz of polymer-free, non-flammable, and non-toxic triple-action sealant, safe for HVAC systems.
- RectorSeal is a trusted brand offering quality solutions for HVAC/R, plumbing, and construction professionals.
Read More
- AC Leak Freeze PRO utilizes nano particles for a robust dual sealant that effectively fills cracks in HVAC coils.
- User-friendly application with a 1/4" adapter; safe and OEM approved for HVAC systems.
- Permanently seals refrigerant gas leaks in HVAC and refrigeration systems, enhancing their performance.
- 1.5 oz of polymer-free, non-flammable, and non-toxic triple-action sealant, safe for HVAC systems.
Read More
#9
Free Shipping
- AC Leak Freeze PRO contains innovative nano particles designed to create a robust dual seal that effectively addresses refrigerant leaks in HVAC systems.
- The product comes with a standard 1/4" AC leak freeze adapter for user-friendly application, ensuring compatibility and safety with HVAC systems.
- This sealant permanently stops refrigerant gas leaks in both residential and commercial HVACR systems, efficiently sealing small and hard-to-detect leaks.
- Packaged in a 1.5 oz container, the leak freeze pro features a UV formula that helps to identify larger leaks, while ensuring it is polymer-free, non-flammable, and non-toxic for safe use in HVAC systems.
- RectorSeal is a trusted name in the HVAC/R industry, providing reliable solutions for various professional trades, including plumbing, electrical, and construction.
Read More
- AC Leak Freeze PRO contains innovative nano particles designed to create a robust dual seal that effectively addresses refrigerant leaks in HVAC systems.
- The product comes with a standard 1/4" AC leak freeze adapter for user-friendly application, ensuring compatibility and safety with HVAC systems.
- This sealant permanently stops refrigerant gas leaks in both residential and commercial HVACR systems, efficiently sealing small and hard-to-detect leaks.
Read More
#10
Free Shipping
- AC Leak Freeze Pro uses advanced nano technology for enhanced dual sealing of refrigerant leaks
- Designed for easy application with a standard 1/4" adapter; suitable for all HVAC systems
- Effectively seals refrigerant gas leaks in both residential and commercial HVACR systems, addressing small, hard-to-find micro leaks
- Contains 1.5 oz of a non-toxic, non-flammable, polymer-free sealant; OEM approved for safety in HVAC systems
- RectorSeal is a trusted name in providing quality solutions for HVAC, plumbing, electrical, and construction professionals
Read More
- AC Leak Freeze Pro uses advanced nano technology for enhanced dual sealing of refrigerant leaks
- Designed for easy application with a standard 1/4" adapter; suitable for all HVAC systems
- Effectively seals refrigerant gas leaks in both residential and commercial HVACR systems, addressing small, hard-to-find micro leaks
- Contains 1.5 oz of a non-toxic, non-flammable, polymer-free sealant; OEM approved for safety in HVAC systems
Read More
Refrigerant Leak Detector Liquid
See All
Central Air Conditioner Leak Sealer
See All
Red Devil Oil Stop Leak
See All
