blueseal R-134a A/C Stop Leak 2 oz with Reusable Hose & Gauge — Zero‑Polymer Formula with Built‑in UV Dye

When an automotive air-conditioning system gradually loses cooling power, slow refrigerant leaks are often the culprit. Blueseal’s lab-tested, non-polymer formula permanently bonds on contact with oxygen under system pressure to seal leaks in evaporators, condensers, rubber hoses, O-rings and gaskets without introducing particulates. The bottle includes a self-sealing valve and a reusable R-134a hose with a color-coded gauge to make application and pressure monitoring straightforward for both DIYers and professionals.

How does Blueseal stop refrigerant leaks without clogging my system?

The formula is zero-polymer and leaves no solid particulates that could foul compressors, evaporator cores, or recovery equipment. It reacts when oxygen enters the pressurized system and forms a permanent bond at the leak site while remaining fluid elsewhere.

• Zero-polymer composition prevents deposits and blockages
• Activates only where air contacts escaping refrigerant
• Compatible with recovery machines and standard service tools
• Safe for seals and internal components when used as directed

Will the product find and seal leaks on all parts of my car’s A/C?

Blueseal is formulated for common leak points in R-134a MVAC systems. Controlled lab testing shows over 95% effectiveness for systems losing up to 25 oz of refrigerant per year, and it works on metal and rubber failure points that allow air ingress.

• Seals evaporator cores and condensers
• Repairs rubber hoses, gaskets, and O-rings
• Conditions aged rubber to improve sealing performance
• Not intended for very large ruptures or major mechanical failure

What diagnostic help does the kit provide if the leak is hard to find?

The formulation contains professional-grade UV dye so you can quickly pinpoint leak locations under a UV lamp. The integrated dye saves a trip to separate products and speeds up troubleshooting for both home mechanics and technicians.

• Built-in UV dye highlights leak sites under UV light
• Speeds technician diagnostics and saves time for DIY repairs
• Reduces guesswork by combining dye and sealant in one product
• Use UV lamp (not included) for visual confirmation before and after sealing

How do I use the 2 oz bottle with the included hose and gauge?

The kit’s self-sealing rubber valve lets you attach the reusable R-134a hose and read system pressure on the permanently mounted analog 0–200 PSI gauge. Color-coded gauge zones indicate safe fill, caution, and high-pressure ranges for easier interpretation while adding the 2 oz treatment; refrigerant recharge is sold separately.

• Attach hose to the low-side service port using the self-sealing valve
• Monitor pressure via the color-coded 0–200 PSI analog gauge
• Introduce entire 2 oz bottle per instructions; then recharge refrigerant as needed
• Hose is reusable for future maintenance jobs

Who is this for: Blueseal R-134a A/C Stop Leak is aimed at vehicle owners, fleet managers, and independent technicians who need a fast, lab-validated solution for slow refrigerant leaks and a built-in UV dye for diagnosis. It’s especially useful for systems losing modest amounts of refrigerant (up to about 25 oz per year), garages that value non-particulate formulas, and DIYers who want a pro-grade kit with a reusable hose and clear pressure guidance. For major system failures or complete component replacement, pair this product with professional service and appropriate refrigerant recharge.