--- product_id: 191020115 title: "AC Leak Freeze 45309 Leak Sealant, Easy Application, HVAC, .5 oz." brand: "rectorseal" price: "¥30518" currency: JPY in_stock: true reviews_count: 13 category: "Rectorseal" url: https://www.desertcart.jp/products/191020115-ac-leak-freeze-45309-leak-sealant-easy-application-hvac-5 store_origin: JP region: Japan --- # Permanent micro-leak fix Nano-particle dual seal tech OEM-approved, pro-grade safe AC Leak Freeze 45309 Leak Sealant, Easy Application, HVAC, .5 oz. **Brand:** rectorseal **Price:** ¥30518 **Availability:** ✅ In Stock ## Summary > ❄️ Seal the deal on leaks before your competition does! ## Quick Answers - **What is this?** AC Leak Freeze 45309 Leak Sealant, Easy Application, HVAC, .5 oz. by rectorseal - **How much does it cost?** ¥30518 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/191020115-ac-leak-freeze-45309-leak-sealant-easy-application-hvac-5) ## Best For - rectorseal enthusiasts ## Why This Product - Trusted rectorseal brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safe & Certified:** OEM-approved, non-toxic, and non-flammable formula keeps your HVAC system protected without compromise. - • **Trusted by Tradesmen:** RectorSeal’s industry-leading reputation means you’re using a product designed for professionals who demand results. - • **Revitalize Your System:** Permanently stops refrigerant leaks to boost AC and refrigeration performance—no more costly downtime. - • **Plug & Play Application:** Standard 1/4" adapter ensures quick, hassle-free use—perfect for busy pros who value efficiency. - • **Nano-Powered Leak Sealing:** Advanced non-polymer nano particles fill even the tiniest HVAC cracks for a stronger, lasting seal. ## Overview RectorSeal AC Leak Freeze 45309 is a professional-grade, .5 oz leak sealant cartridge featuring cutting-edge nano-particle technology that permanently seals micro leaks in HVAC and refrigeration systems. OEM-approved, polymer-free, non-toxic, and non-flammable, it offers easy application with a standard 1/4" adapter, revitalizing AC units and commercial refrigeration by stopping refrigerant leaks quickly and safely. ## Description AC Leak Freeze is the ideal product for A/C unit repair and refrigeration repair. AC Leak Freeze will stop leaks of refrigerant gas in HVACR air conditioning and refrigeration systems in homes and commercial buildings. Standard 1/4" AC leak freeze adapter; ready to use and safe for HVAC systems; OEM approved and professional install is recommended. OEM approved and easy to apply. AC leak freeze will stop leaks of refrigerant gas in HVACR air conditioning and refrigeration systems in homes and commercial buildings. AC leak freeze revitalizes AC and refrigeration systems by permanently sealing small, hard-to-find micro leaks. .5 oz leak freeze cartridge. Polymer free, non-flammable and non-toxic; OEM approved and safe for HVAC systems. FOR THE TRADESMAN: RectorSeal is recognized as a leading provider of quality solutions for the professional trades serving heating, ventilation, and air conditioning (HVAC/R), plumbing, electrical, and construction markets. Review: Works great - Works great Review: Product works! - Freeze leak was difficult to administer with the caulking gun because I didn’t know how to lower the pressure on the low side of my heat-pump unit. However, after running the leak test on my furnace evaporation coils the leak had stopped within 30 minutes. I’m rating this product 5 stars because I was only able to get 70% of the freeze leak in my air conditioning system and it still worked to stop the leak ..😃 ## Features - APPLICATION: AC leak freeze PRO refrigerant leak sealant with new leak seeking nano particles creates a stronger dual sealant; nano particles are non-polymer and non-reactive technology that fills cracks and imperfections in hvac coils - EASY APPLICATION: Standard 1/4" AC leak freeze adapter; ready to use and safe for HVAC systems; OEM approved and professional install is recommended - STOP LEAKS PERMANENTLY: AC leak freeze will stop leaks of refrigerant gas in HVACR air conditioning and refrigeration systems in homes and commercial buildings; AC leak freeze revitalizes AC and refrigeration systems by permanently sealing small, hard-to-find micro leaks - SPECIFICATIONS: .5 oz leak freeze cartridge; polymer free, non-flammable and non-toxic; OEM approved and safe for HVAC systems - FOR THE TRADESMAN: RectorSeal is recognized as a leading provider of quality solutions for the professional trades serving heating, ventilation, and air conditioning (HVAC/R), plumbing, electrical, and construction markets ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07W6R3S48 | | Best Sellers Rank | #435,820 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,241 in Hardware Sealers | | Brand | Rectorseal | | Brand Name | Rectorseal | | Color | Blue | | Compatible Material | Aluminum, Copper | | Customer Reviews | 4.0 out of 5 stars 653 Reviews | | Global Trade Identification Number | 00021449453097 | | Included Components | AC Leak Freeze PRO Nano Mini-Split | | Item Dimensions | 1.5 x 1.5 x 6.5 inches | | Item Form | Liquid | | Item Type Name | Leak Sealer | | Item Weight | 5 ounces | | Item dimensions L x W x H | 1.5 x 1.5 x 6.5 inches | | Manufacturer | Rectorseal | | Material | Polymer | | Material Type | Polymer | | Model | 45309 | | Number of Items | 1 | | Number of Packs | 12 | | Part Number | 45309 | | Style | Safety | | Style Name | Safety | | Surface Recommendation | Copper | | UPC | 021449453097 | | Unit Count | 1 Count | ## Product Details - **Material:** Polymer - **Brand:** Rectorseal - **Style:** Safety - **Item Weight:** 5 Ounces - **Item dimensions L x W x H:** 1.5 x 1.5 x 6.5 inches ## Images ![AC Leak Freeze 45309 Leak Sealant, Easy Application, HVAC, .5 oz. - Image 1](https://m.media-amazon.com/images/I/91GFfIg6ISL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great *by D***S on May 10, 2026* Works great ### ⭐⭐⭐⭐⭐ Product works! *by G***Z on August 10, 2020* Freeze leak was difficult to administer with the caulking gun because I didn’t know how to lower the pressure on the low side of my heat-pump unit. However, after running the leak test on my furnace evaporation coils the leak had stopped within 30 minutes. I’m rating this product 5 stars because I was only able to get 70% of the freeze leak in my air conditioning system and it still worked to stop the leak ..😃 ### ⭐⭐⭐⭐ GOOD STUFF...but *by B***9 on August 10, 2020* It did not work in my unit but it was 26 years old and beyond repair. I replaced entire unit couple weeks later. I think it would work with less severe leaks throughout. ## Frequently Bought Together - Rectorseal 45309 AC Freeze PRO Nano Mini-Split Leak Sealer, 5 oz, Blue - Rectorseal 45317 Leak Sealer, 1.5 oz, Green --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/191020115-ac-leak-freeze-45309-leak-sealant-easy-application-hvac-5](https://www.desertcart.jp/products/191020115-ac-leak-freeze-45309-leak-sealant-easy-application-hvac-5) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-28*