# Nitrox Steel Weld Head Gasket Seal, 500 ml

Nitrox Steel Weld is a 500 ml coolant-system sealant listed for head-gasket leaks and other leaks. The manufacturer says it can be added directly to the system without flushing, mixes with all antifreeze and works in minutes, but these are product claims rather than verified outcomes.

- [Original product page](https://bargainpostbox.co.uk/product/nitrox-steel-weld-head-gasket-seal-500-ml)
- [View offer](https://bargainpostbox.co.uk/visit/nitrox-steel-weld-head-gasket-seal-500-ml)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: Nitrox
- Category: Cars & Motorcycles > Auto Parts & Maintenance > Vehicle Oils & Fluids
- Price: 29.74 GBP
- Previous price: 34.99 GBP
- Discount: 15%
- Price checked: 2026-11-13T05:53:13.594Z
- Rating: 3.6 / 5
- Reviews: 152

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- The listing describes the product as a sealant for head-gasket and other leaks.
- The manufacturer claims it mixes with all antifreeze and can be poured into the coolant system without flushing.
- The manufacturer claims repair in minutes and says anti-rust inhibitors are included.

## Pros

- Direct addition to the coolant system is claimed, without a flushing step.
- The product is claimed to mix with all antifreeze, which may suit buyers seeking an in-system application.

## Specifications

### Identity
- Brand: Nitrox
### Dimensions and installation
- Form factor: Round
### Materials and protection
- Material listed: Alloy Steel

## Before you buy

- The claims of a permanent repair, sealing leaks in minutes and continued prevention are manufacturer claims, not independently confirmed performance. Suitability for a particular leak is not specified. Follow the product instructions and assess whether a sealant is appropriate for the vehicle.

## A good fit for

- Vehicle owners considering an in-system sealant for a head-gasket or other coolant-system leak.
- Buyers looking for a product whose manufacturer claims compatibility with all antifreeze.

## Less suited to

- Anyone needing a confirmed repair guarantee or documented suitability for a specific vehicle or leak.

## Customer feedback

The supplied evidence contains aggregate ratings but no customer comments, so it does not establish what buyers liked or disliked or why they rated it as they did. The distribution is mixed, which offers limited reassurance for buyers relying on a dependable repair. Consider that uncertainty alongside the manufacturer’s unverified claims about speed and permanence.

## Frequently asked questions

### Can Nitrox Steel Weld be added without flushing the coolant system?
The manufacturer says it can be added directly to the coolant system without flushing and mixes with all antifreeze. Follow the product instructions for the vehicle.
### Does it permanently repair leaks?
The listing claims a permanent repair for most leaks and says it works in minutes. These performance claims are not independently verified, and the listing does not specify suitability for each leak type.
### What is the listed container size?
The product title specifies 500 ml.

## Images

![Nitrox Steel Weld Head Gasket Seal, 500 ml — 1](https://bargainpostbox.co.uk/i/js1LhM46tU4SNZELx120Rzpq62lE6-vvgVRVMfXGrsUxgb1eXR3Q6fRWOWbKTOXZb4glFLNkENnZnmv4-LhaNb8kNJkx3_5Dp9MFAdAZj2qMru4dkycA0mln.jpg)

![Nitrox Steel Weld Head Gasket Seal, 500 ml — 2](https://bargainpostbox.co.uk/i/ifi6PlUX80x-Ozd3Z_asnl5cEJe3fW9trwbNN8jwZP3Nogap5c_bcy7hfL3YyKdhSObHbnBDkNQcG5-XVXq6RWcfnHDzvAxzs71V7D_vj3aaPg3hEsfGT8tm.jpg)

![Nitrox Steel Weld Head Gasket Seal, 500 ml — 3](https://bargainpostbox.co.uk/i/HZMEhDXWP0THkd51BDc9dTqdq8t9fwNDwkQq2_HoheFjXfFWBVUOHajudM6aLDdSHGjlQRKAmiJpueAVstniUYVsWIKwwqQerQtweEa78-x6LpDlahu1U5ye.jpg)

![Nitrox Steel Weld Head Gasket Seal, 500 ml — 4](https://bargainpostbox.co.uk/i/w2dVXZmS6TZfivy81mPnZSApAYmsgFjnVP8NMe0OvayRVK2jAFhQXbbT2hfFP8gqECwKn46f8245cG7uE-kM5f0ClPeiglRq4_z2fYMJxFtU8TBKkwLYkFPU.jpg)

![Nitrox Steel Weld Head Gasket Seal, 500 ml — 5](https://bargainpostbox.co.uk/i/BYud1V-IVVgmuJn7bYCixHUGWRHOaRMHBGzO5agETFZH31bUWeAR4gWuTznOATJ4mGcTVGgqcWxyTTpeyHldcHH1AhO3cBRrz6LuoBG_UvyVztzZeenSlX8y.jpg)

![Nitrox Steel Weld Head Gasket Seal, 500 ml — 6](https://bargainpostbox.co.uk/i/ix0uuwHQMUUw7Qp_27deYOqGO0cwbk3NyTv7g8Rv3WyplZjGV2LHjQNgQlT0Ap6drnCnUhHOcRK0Kni42m9iYz6CjmqQnXf_qVatxvMBv_OaRJYfYDKNzIsW.jpg)

![Nitrox Steel Weld Head Gasket Seal, 500 ml — 7](https://bargainpostbox.co.uk/i/HfWVmhPzYOmCkWeL60PSpyVOA1O_OvjMwzw4_OaCeBqTsba9mQyTFF_CregyplVM0NDGOuMHN2v4r5891_TijpvH3bn2R29kWmi5ySJ1ngwt9nNFN6wGhZJj.jpg)