---
product_id: 1571173
title: "RED TEK LeakStop12 A/C Seal Treatment (4 oz. can)"
brand: "red tek"
price: "VT11725"
currency: VUV
in_stock: true
reviews_count: 8
category: "Red Tek"
url: https://www.desertcart.vu/products/1571173-red-tek-leakstop12-a-c-seal-treatment-4-oz-can
store_origin: VU
region: Vanuatu
---

# Saves cost vs. replacements Seals leaks in seconds Reduces refrigerant emissions RED TEK LeakStop12 A/C Seal Treatment (4 oz. can)

**Brand:** red tek
**Price:** VT11725
**Availability:** ✅ In Stock

## Summary

> 🚀 Seal it fast, save big, and stay cool with RED TEK LeakStop12!

## Quick Answers

- **What is this?** RED TEK LeakStop12 A/C Seal Treatment (4 oz. can) by red tek
- **How much does it cost?** VT11725 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/1571173-red-tek-leakstop12-a-c-seal-treatment-4-oz-can)

## Best For

- red tek enthusiasts

## Why This Product

- Trusted red tek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Eco-Conscious Choice:** Minimizes harmful refrigerant emissions, helping you stay green while fixing leaks.
- • **Instant Leak Sealing:** Easy install, seals leaks within seconds to get your A/C running fast.
- • **Safe & User-Friendly:** Less toxic formula than methanol-based treatments, making repairs safer and hassle-free.
- • **Budget-Friendly Repair:** Avoid costly part replacements—save time and money with a simple treatment.
- • **Universal Compatibility:** Works seamlessly with R134a, R12, metal parts, and all common lubricants.

## Overview

RED TEK LeakStop12 is a fast-acting A/C seal treatment that restores and pressurizes worn rubber seals and o-rings in refrigeration systems. Compatible with a wide range of refrigerants and lubricants, it offers a cost-effective, eco-friendly, and safer alternative to expensive part replacements, sealing leaks in seconds and reducing refrigerant emissions.

## Description

RED TEK LeakStop, an a/c seal treatment from Thermofluid Technologies, is a formulated system designed to seal rubber parts and o-rings of air conditioning and refrigeration systems. LeakStop pressurizes and restores brittle o-rings that have been worn or damaged. Operation: Easy to use. Installs in minutes. Seals in seconds. Lower Cost: Less expensive than replacing leaking o-ring and rubber seals. Saves time and money. Compatibility: Compatible with most common refrigeration materials and lubricants including R134a, R12, metal components, mineral and synthetic(Ester and PAG) lubricants, seals, gaskets, hoses, compressors, and o-rings. Environment: Helps the environment by reducing refrigerant emissions. Safety: Safe and easy to use. LeakStop is less toxic than other seal treatments that contain poisonous methanol. IMPORTANT INFORMATION: This product cannot be returned because it uses flammable liquids and gases, is classified as a hazardous material, or meets other criteria.

Review: Simply great leak repair. It works. - Been using it for 20 years and this is simply the best I have ever seen or heard of. Why? I sealed a home A/C unit that lasted another ten years before replacement. There were several holes in the coil. 2 Cans later, everything was working and well.
Review: AC leak fix - After charging the AC, a few weeks later it started to blow a little warm again. After charging with Red Tec, so far it's holding the cold. Hopefully, this hold 🙏

## Features

- Operation: Easy to use. Installs in minutes. Seals in seconds.
- Lower Cost: Less expensive than replacing leaking o-ring and rubber seals. Saves time and money.
- Compatibility: Compatible with most common refrigeration materials and lubricants including R134a, R12, metal components, mineral and synthetic(Ester and PAG) lubricants, seals, gaskets, hoses, compressors, and o-rings.
- Environment: Helps environment by reducing refrigerant emissions.
- Safety: Safe and easy to use. Less toxic than other seal treatments that contain poisonous methanol.
- IMPORTANT INFORMATION: This product cannot be returned because it uses flammable liquids and gases, is classified as a hazardous material, or meets other criteria. This is a non refundable, non returnable product.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00DJDYR7C |
| Best Sellers Rank | #665,529 in Automotive ( See Top 100 in Automotive ) #90 in Refrigerants |
| Brand | RED TEK |
| Customer Reviews | 4.2 4.2 out of 5 stars (79) |
| Date First Available | June 21, 2013 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8 ounces |
| Manufacturer | Thermofluid Technologies |
| Manufacturer Part Number | 401 |
| Product Dimensions | 11 x 8 x 7 inches |

## Images

![RED TEK LeakStop12 A/C Seal Treatment (4 oz. can) - Image 1](https://m.media-amazon.com/images/I/51O+-xjDrEL.jpg)

## Questions & Answers

**Q: I have a 1969 buick with factory a/c.  can leak stop be used in the old system?  can i recharge with redtek refrigerant?  how many cans would i need?**
A: Yes, you can use the LeakStop in your system.   Be aware it does contain 2 oz. of refrigerant in it, so you would deduct this from the amount of refrigerant you install.   The 6 oz can of refrigerant is equivalent to 18 oz. of R12.   Your low side PSI should be between 30-38.

**Q: Works on car ?**
A: Fortunately I had other ac (car) issues before I could use it .  Too many reasons why one NEVER use ANY ac sealant products . They can change a fixable issue into a way more expensive fix .

**Q: Is this loaded on the low side or high side on a r12 a/c system? i have a r12 a/c on my car.**
A: Install on low side port.

**Q: Can I use this on my mazda 3 2007 that is leaking at the compressor shaft?**
A: Front seal leaks on my 150k mile 85 Corvette. This seemed to slow it down considerably.  YMMV.  HTH.
Joe K

## Customer Reviews

### ⭐⭐⭐⭐⭐ Simply great leak repair. It works.
*by S***S on May 4, 2018*

Been using it for 20 years and this is simply the best I have ever seen or heard of. Why? I sealed a home A/C unit that lasted another ten years before replacement. There were several holes in the coil. 2 Cans later, everything was working and well.

### ⭐⭐⭐⭐⭐ AC leak fix
*by M***X on June 13, 2023*

After charging the AC, a few weeks later it started to blow a little warm again. After charging with Red Tec, so far it's holding the cold. Hopefully, this hold 🙏

### ⭐⭐⭐⭐⭐ Stops leak when added before the Red Tech freon
*by P***N on October 6, 2023*

I haven’t used the order this time but have used before and it worked great

## Frequently Bought Together

- RED TEK LeakStop12 A/C Seal Treatment (4 oz. can)
- Generic Arctic Air for R12, 3 cans and a Brass Charging Gauge
- RED TEK ProSeal12 A/C Seal Treatment (4 oz. can)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-01-23*