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The easiest injection method: no more fussing with messy syringes, or pressurized cans. It’s similar to how blood in your body reacts to a cut. When a leak occurs, the leak Saver reacts with the air and moisture at the leak site to permanently seal the leak.
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. 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.




Compatible with all systems and refrigerants: : the leak saver uv is compatible with all systems, r134a, and oils. If for any reason you are not satisfied with your product, please contact us and we will make it right. Note: for automotive systems, hoses, you will still need the standard 134A to 1/4” charging adapter.
When used for preventative maintenance, the active ingredient circulates safely in the system to seal future leaks. 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. It is great for central air conditioners, car and automotive air conditioners, R22 and replacements, heat pumps, ductless mini-splits, R290, refrigerants except ammonia, R404A, r1234yf, commercial refrigeration systems, R600a, geothermal heat pumps, refrigerators, micro channel coils and more.

1. AC Pro
#ad
NO Gauge, Includes 14oz R134A & Recharge Hose, Arctic Freeze Auto A/C Recharge R-134a Synthetic Refrigerant for MVAC use in a 14-Ounce Self-Sealing Container with Stop Leak
#adAC Pro #ad - For mvac use in a 14-ounce self-sealing container with Stop Leak. Of additives. Of r-134a and 2 oz. Packaging may vary as shown in last picture -- Reusable recharge hose with push button dispenser included -- NO GAUGE.More information #ad
Contains moisture and acid buildup eliminator which helps extend A/C system life. Cool boost technology delivers colder air -- Contains approximately 12 oz. Contains leak sealer to seal common A/C leaks in rubber hoses, gaskets, and O-rings.Brand | AC Pro #ad |
Manufacturer | AC Pro #ad |
Weight | 1.4 Pounds |
Part Number | ACP-AF2V/CA |
Model | ACP-AF2V/CA |
Warranty | 100% Customer Satisfaction |
More information #ad
2. Blue Devil
#ad
4.5 Ounce, BlueDevil Products Red Angel 00222 A/C Stop Leak & Conditioner
#adBlue Devil #ad - Will not clog or damage the A/C System or Recovery Unit. Now with uv Dye for leak detection. Guaranteed permanent seal. Guaranteed Permanent Seal.More information #ad
Brand | Blue Devil #ad |
Manufacturer | Red Angel #ad |
Height | 5.5 Inches |
Length | 2.25 Inches |
Weight | 0.28 Pounds |
Width | 2.25 Inches |
Part Number | 00222 |
Model | 00222 |
Warranty | limited |
More information #ad
3. Leak Saver
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For Systems Up to 1 Ton, Leak Saver Direct Inject Small System Refrigerant Leak Sealer, Ideal for Most Small Home Appliances, Air Conditioners and Refrigeration Systems, Proudly Made in The USA
#adLeak Saver #ad - Note: for automotive systems, hoses, 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. Mini-splits may require a 5/16” to 1/4” charging adapter.The easiest injection method: no more fussing with messy syringes, or pressurized cans. It’s similar to how blood in your body reacts to a cut. When a leak occurs, the leak Saver reacts with the air and moisture at the leak site to permanently seal the leak.
More information #ad
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. Super concentrated and made to work with all types of refrigerants, it’s compatible with all types of refrigerants and oils except ammonia. 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. 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.
Brand | Leak Saver #ad |
Manufacturer | Leak Saver #ad |
Part Number | LS-SS |
More information #ad
4. Comstar
#ad
Non-Hardening, Seals Leaks Instantly, Permanent "Stop Leak" for A/C Systems, 4 Ounces 90-700, Eco-Friendly, Made in USA, Polymer-Free, ComStar A/C Zero-Leak
#adComstar #ad - Environmentally safe & suitable for use in automotive, commercial, and residential A/C applications. Used for preventive maintenance and left in an operating system. Designed to not harm A/C systems with non-hardening, polymer-free characteristics.More information #ad
Is a specially developed product for preventing minor leaks in evaporators, condensers, gaskets, and seals. Compatible with poe-based, PAG-based, and mineral-oil-based mobile AC lubricants.Brand | Comstar #ad |
Manufacturer | ComStar International, Inc. #ad |
Weight | 0.25 Pounds |
Part Number | 90-700 |
Model | 90-700 |
Warranty | No WARRANTY |
More information #ad
5. InterDynamics
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3 Oz Each, Certified A/C Pro Refrigerant Leak Stop Kit for R134A Car Air Conditioners, InterDynamics Car Air Conditioner
#adInterDynamics #ad - Safe for all R-134a systems. Comes with recharge hose. Seals rubber leaks in hoses O-rings and gaskets. Seals metal leaks in condensers, evaporators, accumulators, receiver and driers. Professional grade.More information #ad
Brand | InterDynamics #ad |
Manufacturer | InterDynamics #ad |
Part Number | CERT325-6 |
Model | InterDyn - CERT325-6B |
Warranty | Manufacturer’s warranty can be requested from customer service. |
More information #ad
6. ZeroR
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ZeroR A/C Pro R134a Super Seal Stop Leak | Seals Metal & Rubber Air Conditioning Leaks | Installation Can Tap Included
#adZeroR #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. 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, O-rings, accumulators, receiver and driers.More information #ad
3oz - can size is 3oz by weight. Also works on rubber parts like hoses, evaporators, gaskets. No additional tools required! Safe - safe for all r-134A systems and Compatible with all lubricants. Legal - r134a refrigerant for MVAC use in 3oz Self Sealing Cans.Brand | ZeroR #ad |
Manufacturer | ZeroR #ad |
Part Number | 107SS |
More information #ad
7. Leak Saver
#ad
Refrigeration, and Automotive Systems Up to 5 Tons, Compatible with All Refrigerants, Leak Saver Direct Inject UV, Refrigerant Leak Sealer with Added UV Dye to Detect Large Leaks, for AC
#adLeak Saver #ad - When a leak occurs, the leak Saver reacts with the air and moisture at the leak site to permanently seal the leak. It also works with all refrigerants including R410A Freon, and more. Your satisfaction is our priority: we stand behind the effectiveness 100%. Mini-splits may require a 5/16” to 1/4” charging adapter. It’s similar to how blood in your body reacts to a cut.Compatible with all systems and refrigerants: : the leak saver uv is compatible with all systems, r134a, and oils. If for any reason you are not satisfied with your product, please contact us and we will make it right. Note: for automotive systems, hoses, you will still need the standard 134A to 1/4” charging adapter.
More information #ad
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. The easiest injection method: no more fussing with messy syringes, or pressurized cans. 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. When used for preventative maintenance, the active ingredient circulates safely in the system to seal future leaks. 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. It is great for central air conditioners, car and automotive air conditioners, R22 and replacements, heat pumps, ductless mini-splits, R290, refrigerants except ammonia, R404A, r1234yf, commercial refrigeration systems, R600a, geothermal heat pumps, refrigerators, micro channel coils and more.
Brand | Leak Saver #ad |
Manufacturer | Leake Savers #ad |
Height | 0.6 Inches |
Length | 6.5 Inches |
Weight | 100 Kilograms |
Width | 9.6 Inches |
Part Number | LS-05UV |
Model | LS-05UV |
More information #ad
8. Bar's Leaks
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Gray, Bar's Leaks 1186 Liquid Aluminum Stop Leak, 16.9 oz
#adBar's Leaks #ad - Special shipping information: This item cannot be returned and has additional shipping restrictions. Repairs gasket leaks. Lowers water temperature. Seals radiator leaks. Seals freeze plug leaks.More information #ad
Repairs gasket leaks and heater core leaks. All products are safe to use per the directions, proper dosage and in a clean system. Seals freeze plug leaks. Bar's leaks liquid aluminum stop leak seals radiator leaks. Tip: if direct access to radiator is not available, install in overflow tank.Brand | Bar's Leaks #ad |
Manufacturer | Bar's Leaks #ad |
Height | 7.4 Inches |
Length | 2.6 Inches |
Weight | 1.2 Pounds |
Width | 2.6 Inches |
Part Number | 1186 |
Model | 1186 |
Warranty | 1 year manufacturer |
More information #ad