---
product_id: 50489980
title: "Fernox 58232 Leak Sealer"
brand: "fernox"
price: "R1759"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Fernox"
url: https://www.desertcart.co.za/products/50489980-fernox-58232-leak-sealer
store_origin: ZA
region: South Africa
---

# Seals leaks in 30 seconds Non-toxic & eco-friendly formula Protects against corrosion & limescale Fernox 58232 Leak Sealer

**Brand:** fernox
**Price:** R1759
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it fast, protect it smart – never let a leak slow your flow!

## Quick Answers

- **What is this?** Fernox 58232 Leak Sealer by fernox
- **How much does it cost?** R1759 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/50489980-fernox-58232-leak-sealer)

## Best For

- fernox enthusiasts

## Why This Product

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

## Key Features

- • **Mess-Free Application:** No spills, no fuss—just easy dosing via radiator adapter or filling loop.
- • **Dual Protection Formula:** Stops leaks while shielding your system from corrosion and limescale buildup.
- • **Universal Compatibility:** Works seamlessly with all metals and materials in domestic heating systems.
- • **Eco-Conscious Heating Care:** Non-toxic and environmentally friendly, because your home and planet deserve the best.
- • **Rapid Leak Fix in 30 Seconds:** Get your heating system leak-proof faster than your morning coffee brews.

## Overview

Fernox 58232 Leak Sealer is a quick-acting, pressurized aerosol designed to seal leaks in domestic central heating systems within 30 seconds. It offers dual protection by preventing corrosion and limescale buildup, is easy to apply without mess using supplied adapters, and features a non-toxic, environmentally friendly formula compatible with all common heating system materials.

## Description

Protector F1 is a market leading inhibitor which protects against corrosion and limescale formation in domestic central heating systems. Available in 500ml liquid bottle, 265ml Express aerosol canister and 290ml gel cartridge formats. Protector F1 is suitable for use with all metals and materials commonly used in heating systems. For long-term protection ensure concentration levels are maintained and checked annually as part of the boiler or system service. Protector F1 is compatible with all other Fernox products.

Review: Corrected leak - Had a slow leak in my 10 radiator combi central heating. Used the Fernox leak sealer as instructed and ran the heating system on low heat for two hours. It corrected the leak and several weeks later pressure is still maintained. This is an excellent product and to be recommended.
Review: Excellent product - Great stuff very easy to use

## Features

- Extremely flammable aerosol.
- Pressurised container: May burst if heated.
- Quick and convenient – doses in 30 seconds
- Simple to use with no mess
- Add via a radiator adapter or filling loop supplied
- Protects against corrosion and limescale
- Non-toxic, environmentally friendly formulation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00NXZO12C |
| Batteries Required? | No |
| Batteries included? | No |
| Customer Reviews | 3.9 3.9 out of 5 stars (49) |
| Date First Available | 26 Mar. 2013 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Included Components | Leak Sealer |
| Item Package Quantity | 1 |
| Item Weight | 300 g |
| Item model number | 58232 |
| Manufacturer | Fernox |
| Number of Pieces | 1 |
| Part Number | F4 |
| Product Dimensions | 5.2 x 18.2 x 8.8 cm; 300 g |

## Images

![Fernox 58232 Leak Sealer - Image 1](https://m.media-amazon.com/images/I/21eTfU-M-AL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Corrected leak
*by D***E on 17 July 2018*

Had a slow leak in my 10 radiator combi central heating. Used the Fernox leak sealer as instructed and ran the heating system on low heat for two hours. It corrected the leak and several weeks later pressure is still maintained. This is an excellent product and to be recommended.

### ⭐⭐⭐⭐⭐ Excellent product
*by J***C on 3 February 2020*

Great stuff very easy to use

### ⭐ I got very wet!
*by D***E on 22 December 2018*

I have a pressurised combi boiler system working under very low pressure as we do have a leak issue and my plumber recommended I used this product. So, after watching their "how easy it is to use video" I went ahead and bought it. According to the video it should only take a matter of a few minutes to use. So, I attached the product exactly as per the video, pulled the trigger and about 5 seconds later the black plastic tube attached to the trigger shot off and I was covered in water and F4.

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**Shop now:** [https://www.desertcart.co.za/products/50489980-fernox-58232-leak-sealer](https://www.desertcart.co.za/products/50489980-fernox-58232-leak-sealer)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-16*