--- product_id: 191322413 title: "AC Leak Freeze 45308 Leak Sealant, Easy Application, HVAC, 0.5 oz." brand: "rectorseal" price: "$120.66" currency: USD in_stock: true reviews_count: 4 category: "Rectorseal" url: https://www.desertcart.us/products/191322413-ac-leak-freeze-45308-leak-sealant-easy-application-hvac-0 store_origin: US region: United States of America --- # OEM approved for HVAC pros 0.5 oz ready-to-use cartridge Nano-particle dual sealant tech AC Leak Freeze 45308 Leak Sealant, Easy Application, HVAC, 0.5 oz. **Brand:** rectorseal **Price:** $120.66 **Availability:** ✅ In Stock ## Summary > ❄️ Seal the leak, save the chill — don’t let your system miss a beat! ## Quick Answers - **What is this?** AC Leak Freeze 45308 Leak Sealant, Easy Application, HVAC, 0.5 oz. by rectorseal - **How much does it cost?** $120.66 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/191322413-ac-leak-freeze-45308-leak-sealant-easy-application-hvac-0) ## 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 - • **Trusted by Pros:** RectorSeal’s industry-leading reputation means you’re using a product designed for the tradesman. - • **Safe & Certified:** Non-flammable, non-toxic formula approved by OEMs for worry-free HVAC system use. - • **Revitalize Your System:** Stops refrigerant leaks to boost efficiency and extend the life of your AC or refrigeration unit. - • **Plug & Play Application:** Standard 1/4" adapter ensures effortless, professional-grade installation every time. - • **Nano-Powered Leak Sealing:** Advanced non-polymer nano particles fill micro cracks for a permanent fix. ## Overview RectorSeal AC Leak Freeze 45308 is a 0.5 oz, OEM-approved refrigerant leak sealant featuring innovative nano-particle technology that permanently seals micro leaks in HVAC and refrigeration systems. Safe, non-toxic, and easy to apply with a standard 1/4" adapter, it revitalizes air conditioning units by stopping refrigerant loss, making it a trusted solution for professional tradesmen and commercial applications. ## 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. 0.5 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: Worked Great - Used on a minisplit system with a small undetermined leak. The system still had pressure, and had leaked down slowely over several years. Simply attached to the service port, attached gauges, and brought system up to the correct level of 410a through leak stop. Has worked well now for a couple months. Review: No results - Does not seem to have any affect on 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: .05 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 | B07WLMQ164 | | Batteries required | No | | Best Sellers Rank | #486,575 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,228 in Hardware Sealers | | Customer Reviews | 4.3 4.3 out of 5 stars (12) | | Included Components | AC Leak Freeze | | Item Weight | 6.1 ounces | | Item model number | 45308 | | Manufacturer | Rectorseal | | Product Dimensions | 1.5 x 1.5 x 6.5 inches | ## Images ![AC Leak Freeze 45308 Leak Sealant, Easy Application, HVAC, 0.5 oz. - Image 1](https://m.media-amazon.com/images/I/91djBX9SGNL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worked Great *by S***I on August 24, 2024* Used on a minisplit system with a small undetermined leak. The system still had pressure, and had leaked down slowely over several years. Simply attached to the service port, attached gauges, and brought system up to the correct level of 410a through leak stop. Has worked well now for a couple months. ### ⭐ No results *by R***L on July 8, 2021* Does not seem to have any affect on the leak ### ⭐⭐⭐⭐⭐ Saved me $3000+ *by T***E on August 30, 2023* Used this to repair 7 year old mini-split system in a recently purchased house. The AC company wanted over $3000 for a new system, said the system I had couldn't be repaired. Granted it is an inexpensive no-name mini-split system from China with aluminum condenser and evaporator. I understand why they don't repair these - you never know which component will fail next - or when. I bought this, an inexpensive set of gauges, and a bottle of R410 and had it fixed in a few hours for a few hundred dollars. That includes the time spent watching YouTube videos. Over a year later and it still going strong. ## Frequently Bought Together - Rectorseal 45308 AC Freeze PRO Nano Mini-Split UV Leak Sealer, Yellow - Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack) - Leak Saver AC Drain Line Cleaner Tool & Leak Sealant Injector | Condensate Line Co2 Drain Gun | AC Drain Line Unclogger --- ## 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.us/products/191322413-ac-leak-freeze-45308-leak-sealant-easy-application-hvac-0](https://www.desertcart.us/products/191322413-ac-leak-freeze-45308-leak-sealant-easy-application-hvac-0) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-04-27*