blueseal R134a A/C Stop Leak 2oz with UV Dye and Reusable Hose/Gauge — Non-Polymer, Seals Metal & Rubber

Blueseal R134a Quick A/C Stop Leak is a zero-polymer refrigerant leak sealer with built-in UV dye and a reusable hose and gauge for repairing small automotive A/C system leaks.

If your car’s air conditioning is losing cooling power because of a slow leak, this product is formulated to stop common leaks in R-134a mobile vehicle air conditioning systems without introducing polymers or particulates that can harm compressors or recovery equipment. The lab-tested formula bonds in the presence of oxygen to seal metal and rubber leaks, conditions aged seals, and includes a professional-grade UV dye to help locate larger leaks quickly. The kit comes in a 2oz container with a permanently attached analog 0–200 PSI gauge on a reusable hose for accurate monitoring and filling.

How does Blueseal actually stop leaks in my car’s A/C?

The non-polymer formula reacts with oxygen under system pressure to form permanent bonds at leak points. Because it contains no solid polymers or particulates, it won’t create blockages inside the compressor, evaporator, or recovery machines.

• Permanently bonds when exposed to air inside the pressurized system
• Seals evaporator cores, condensers, rubber hoses, gaskets, and O-rings
• Lab-tested 95%+ seal rate for systems losing up to 25 oz of refrigerant per year

Will this product damage my A/C or recovery equipment?

Blueseal is formulated to avoid solids and particulates that cause clogs; it is non-polymeric and OSHA-classified non-hazardous for R-134a MVAC use. The formula conditions rubber components rather than degrading them, reducing the risk of secondary damage from the treatment itself.

• Zero-particulate formula that won’t clog lines or components
• Safe for compressor and recovery equipment when used as directed
• Conditions dried or aging rubber seals in the same application

How will I find a leak if the sealant can’t fully close it?

The product includes a professional-grade UV dye so technicians and DIYers can quickly locate persistent leaks using a UV light. Detecting the exact leak saves diagnostic time and helps decide if a mechanical repair is necessary.

• Built-in UV dye pinpoints leaks under UV inspection
• Eliminates need for a separate dye product
• Useful for identifying large leaks that require parts replacement

What comes in the kit and how do I monitor pressure safely?

The 2oz container features a self-sealing rubber valve and connects to a reusable R-134a hose with a permanently attached analog 0–200 PSI gauge. The gauge is color-coded to indicate safe fill, alert, and warning ranges so you can refill refrigerant (sold separately) and monitor system pressure accurately.

• 2oz sealed bottle with self-sealing rubber valve
• Reusable R-134a hose with built-in 0–200 PSI analog gauge
• Color-coded gauge zones for straightforward pressure reading

Who is this for: Blueseal R134a A/C Stop Leak is aimed at automotive technicians and DIY vehicle owners who need a professional-grade, non-polymer solution for small to moderate refrigerant leaks in R-134a systems. It is particularly useful when you want a low-risk sealant that conditions old rubber parts and includes UV dye for fast leak detection. If your system is losing more than 25 oz of refrigerant annually or has large mechanical damage, a full component repair by a technician may still be required.