Top 10 Freon Leak Sealer – Air Conditioning Line Repair Tools

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1. Leak Saver

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2022 Updated Sealant Formula for Most HVAC Systems Up to 5 Tons, Made in The USA, Leak Saver Direct Inject Refrigerant Leak Sealer

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Leak Saver #ad - It’s similar to how blood in your body reacts to a cut. Over three million units sold: with over 3 million units sold of this sealant formula since 2015, we are the most reliable leak sealant among HVAC professionals. When a leak occurs, the leak Saver reacts with the air and moisture at the leak site to permanently seal the leak.

The leak saver injects directly and easily into the system with a basic manifold gauge set or even easier with our Leak Shot Injection Kits. Mini-splits may require a 5/16” to 1/4” charging adapter. Made by hvac professionals: and used by them, Refrigeration Systems, Commercial Unit Coolers, Heat Pumps, it’s perfect for use in Split Systems, and more. Super concentrated and made to work with all types of refrigerants, it’s compatible with all types of refrigerants and oils except ammonia. The easiest injection method: no more fussing with messy syringes, hoses, or pressurized cans.

A permanent fix for leaks: the leak saver can permanently seal small refrigerant leaks where the complete refrigerant charge is not lost within 72 hours. When used for preventative maintenance, the active ingredient circulates safely in the system to seal future leaks. Note: for automotive systems, you will still need the standard 134A to 1/4” charging adapter. Your satisfaction is our priority: we’re so sure this will seal your next leak that if it doesn’t, contact us for another at no cost must be installed by certified HVAC techs.
BrandLeak Saver #ad
ManufacturerLeak Savers #ad
Height0.6 Inches
Length6.5 Inches
Weight0.2 Pounds
Width9.6 Inches
Part NumberLS-05
ModelLS-05

2. Leak Saver

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Refrigeration, Leak Saver Direct Inject UV, Refrigerant Leak Sealer with Added UV Dye to Detect Large Leaks, for AC, and Automotive Systems Up to 5 Tons, Compatible with All Refrigerants

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Leak Saver #ad - Note: for automotive systems, you will still need the standard 134A to 1/4” charging adapter. The leak saver injects directly and easily into the system with a basic manifold gauge set or even easier with our Leak Shot Injection Kits. The easiest injection method: no more fussing with messy syringes, hoses, or pressurized cans.

It also works with all refrigerants including R410A Freon, R22 and replacements, refrigerators, car and automotive air conditioners, and oils. With added uv dye for finding large leaks: seal it or find it! If you have a leak that is simply too large for leak sealants to seal, the added UV Dye will light up brightly at the leak site when using a UV flashlight. Your satisfaction is our priority: we stand behind the effectiveness 100%. It is great for central air conditioners, R404A, R290, R600a, geothermal heat pumps, ductless mini-splits, and more.

When used for preventative maintenance, the active ingredient circulates safely in the system to seal future leaks. If for any reason you are not satisfied with your product, please contact us and we will make it right. Mini-splits may require a 5/16” to 1/4” charging adapter. More than 3 million units sold since 2015: the leak saver can permanently seal small refrigerant leaks where the complete refrigerant charge is not lost within 72 hours. When a leak occurs, the leak Saver reacts with the air and moisture at the leak site to permanently seal the leak.
BrandLeak Saver #ad
ManufacturerLeake Savers #ad
Height0.6 Inches
Length6.5 Inches
Weight100 Kilograms
Width9.6 Inches
Part NumberLS-05UV
ModelLS-05UV

3. Leak Saver

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Compatible with All Refrigerants, Made in The USA, Refrigeration, Leak Saver Direct Inject Ultimate 3-in-1 Leak Sealant with Moisture Remover and UV Dye for AC, and Automotive Systems up to 5 Tons

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Leak Saver #ad - It also works with all refrigerants including R410A Freon, geothermal heat pumps, refrigerators, commercial refrigeration systems, R600a, and more. Your satisfaction is our priority: we stand behind the effectiveness 100%. When used for preventative maintenance, the active ingredient circulates safely in the system to seal future leaks.

4 in 1 sealant + moisture remover + uv dye : our proven leak sealant now includes moisture remover and UV dye for the complete system treatment! Now, you can seal your leak, remove system moisture, or find large leaks with the UV Dye. All in one easy to install package! Works with all systems and refrigerants : the leak saver ultimate is compatible with all systems, ductless mini-splits, R290, refrigerants except ammonia, and oils. When a leak occurs, the leak Saver reacts with the air and moisture at the leak site to permanently seal the leak. If for any reason you are not satisfied with your product, please contact us and we will make it right.

It is great for central air conditioners, r22 and replacements, R404A, R1234yf, car and automotive air conditioners, heat pumps, R134A, micro channel coils and more. Note: for automotive systems, hoses, you will still need the standard 134A to 1/4” charging adapter. Over three million units sold since 2015: the leak saver can permanently seal small refrigerant leaks where the complete refrigerant charge is not lost within 72 hours. It works similarly to how blood in your body reacts to a cut.
BrandLeak Saver #ad
ManufacturerLeak Saver #ad
Part NumberLS-ULT

4. Nu Calgon

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One Size Treats Systems 2 to 7.5 Tons, Nu-Calgon 4050-11 EasySeal Direct Inject-UV Dye Refrigerant Leak Sealant

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Nu Calgon #ad - One time use. Clear tube so you can see the sealant go in. Concentrated formula means less material in system. No need to pump down R-410A units. Leak Sealant. Perfect for split systems, microchannel coils, heat pumps, packaged units, and mini splits.
BrandNu Calgon #ad
ManufacturerNu-Calgon Wholesaler, Inc. #ad
Height1.97 Inches
Length5.91 Inches
Weight0 Pounds
Width3.94 Inches
Part Number4050-11
Model4050-11

5. Rectorseal

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Rectorseal 45316 AC Freeze PRO Nano Leak Sealer, 1.5 oz, Blue

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Rectorseal #ad - Restore AC performance quickly. Low loss safety fitting. Triple action sealant. Stop refrigerant leaks permanently. Safe delivery tool.
BrandRectorseal #ad
ManufacturerRectorseal #ad
Height10 Inches
Length2 Inches
Weight0 Pounds
Width1.5 Inches
Part Number45316
Model45316

6. Blue Devil

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4.5 Ounce, BlueDevil Products Red Angel 00222 A/C Stop Leak & Conditioner

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Blue Devil #ad - Will not clog or damage the A/C System or Recovery Unit. Guaranteed Permanent Seal. Guaranteed permanent seal. Now with uv Dye for leak detection.
BrandBlue Devil #ad
ManufacturerRed Angel #ad
Height5.5 Inches
Length2.25 Inches
Weight0.28 Pounds
Width2.25 Inches
Part Number00222
Model00222
Warrantylimited

7. InterDynamics

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InterDynamics Car Air Conditioner, Certified A/C Pro Refrigerant Leak Stop Kit for R134A Car Air Conditioners, 3 Oz Each

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InterDynamics #ad - Safe for all R-134a systems. Seals metal leaks in condensers, evaporators, accumulators, receiver and driers. Professional grade. Comes with recharge hose. Seals rubber leaks in hoses O-rings and gaskets.
BrandInterDynamics #ad
ManufacturerInterDynamics #ad
Part NumberCERT325-6
ModelInterDyn - CERT325-6B
WarrantyManufacturer’s warranty can be requested from customer service.

8. Supercool

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12 oz., Refrigerant, 134A Plus Stop Leak

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Supercool #ad - B>price for: each includes: stop leak application: automotive applications container type: Can Container Size: 12 oz. B>item: automotive refrigerant refrigerant Type: 134A Plus Stop Leak Country of Origin subject to change: United States.
BrandSupercool #ad
ManufacturerSUPERCOOL #ad
Weight0.75 Pounds
Part Number24049

9. Comstar

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Made in USA, ComStar A/C Zero-Leak, Seals Leaks Instantly, Polymer-Free, Non-Hardening, Eco-Friendly, Permanent "Stop Leak" for A/C Systems, 4 Ounces 90-700

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Comstar #ad - Is a specially developed product for preventing minor leaks in evaporators, condensers, gaskets, and seals. Designed to not harm A/C systems with non-hardening, polymer-free characteristics. Compatible with poe-based, PAG-based, and mineral-oil-based mobile AC lubricants. Used for preventive maintenance and left in an operating system. Environmentally safe & suitable for use in automotive, commercial, and residential A/C applications.
BrandComstar #ad
ManufacturerComStar International, Inc. #ad
Weight0.25 Pounds
Part Number90-700
Model90-700
WarrantyNo WARRANTY

10. ZeroR

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ZeroR A/C Pro R134a Super Seal Stop Leak | Seals Metal & Rubber Air Conditioning Leaks | Installation Can Tap Included

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ZeroR #ad - Amount of stop leak is enough for any vehicle sized system and smaller with a small amount of R-134a used as a propellent into the system. 3oz - can size is 3oz by weight. Legal - r134a refrigerant for MVAC use in 3oz Self Sealing Cans. Also works on rubber parts like hoses, gaskets. Can tap - comes with it's own can tap that will not be reused. Super seal - ac pro made by interdynamics idq seals metal leaks in condensers, evaporators, O-rings, accumulators, receiver and driers. No additional tools required! Safe - safe for all r-134A systems and Compatible with all lubricants.
BrandZeroR #ad
ManufacturerZeroR #ad
Part Number107SS