RectorSeal AC Leak Freeze PRO Nano HVAC leak sealant — 1.5 oz cartridge, nano particle micro-leak repair, ready-to-use

This compact professional-grade formula is built to help technicians and building owners stop small refrigerant leaks in air conditioning and refrigeration systems without replacing coils or extensive repairs. The product combines non-polymer nano particles with a proven sealing system to penetrate hairline cracks and imperfections, and it connects quickly to standard 1/4" service ports for fast application. OEM-approved and designed for trade use, the Pro Nano cartridge is formulated to be non-flammable and non-toxic for safer handling in HVAC/R environments.

How does the nano particle technology find and seal tiny HVAC leaks?

The nano particles are engineered to remain stable and non-reactive while traveling with the refrigerant until they reach pressure differentials at leak points. Once they encounter a crack or hole, the particles accumulate and form a compact, mechanical seal that complements the product’s broader sealing action. This approach targets leaks that are too small to locate visually, helping the system retain refrigerant longer.

• Non-polymer, inert nano particles that travel with refrigerant flow
• Fills microscopic cracks and coil imperfections
• Works with existing refrigerant circulation—no major system changes

Is application difficult for a technician or contractor?

Application is straightforward for HVAC professionals using standard service equipment: the product fits a 1/4" service adapter and dispenses into the low- or high-side service port as needed. The ready-to-use cartridge eliminates on-site mixing and reduces application time, making it suitable for service calls where quick restoration is important. Full system evacuation or additional components usually aren’t required beyond standard servicing practices.

• Standard 1/4" adapter for simple hookup
• Ready-to-use 1.5 oz cartridge—no mixing needed
• Designed for professional installs with common HVAC tools

What kinds of leaks and systems is this sealant appropriate for?

AC Leak Freeze PRO Nano is intended for small, hard-to-find leaks in residential and commercial HVACR systems and refrigeration coils. It’s optimized for micro leaks and pinholes rather than large ruptures or failed compressors; major damage still requires mechanical repair or component replacement. Always consult OEM guidance and handle according to local regulations when treating refrigerant systems.

• Best for micro leaks, pinholes, and small coil imperfections
• Suitable across air conditioning and refrigeration equipment
• Not a substitute for major mechanical repairs or coil replacement

Are there safety or system-compatibility considerations?

The formula is polymer-free, non-flammable, and labeled as non-toxic for professional HVAC work, and it’s OEM-approved for compatibility with many systems. However, manufacturers recommend professional installation to ensure proper usage and to respect refrigerant handling laws. Technicians should follow standard safety protocols and use approved fittings and service practices when injecting the sealant.

• Polymer-free and non-flammable formulation
• OEM-approved—check compatibility with specific equipment models
• Professional installation recommended; follow refrigerant regulations

Who is this for: This product is designed for HVAC/R technicians, facility maintenance teams, and contractors who need a compact, ready-to-use solution for stopping small refrigerant leaks quickly. It’s geared toward professionals who want an OEM-approved, jobsite-friendly sealant that integrates easily with standard service ports and tools, helping restore system performance without immediate coil replacement.