---
product_id: 56394672
title: "Hi-Gear HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres"
brand: "hi-gear"
price: "B/.80"
currency: PAB
in_stock: true
reviews_count: 13
category: "Hi Gear"
url: https://www.desertcart.com.pa/products/56394672-hi-gear-hg9048s-insta-seal-head-gasket-fix-permanent-engine
store_origin: PA
region: Panama
---

# Heat resistant up to 200°C Fast-acting permanent seal Works on aluminum & cast iron Hi-Gear HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres

**Brand:** hi-gear
**Price:** B/.80
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal it once, drive forever — the ultimate engine lifesaver!

## Quick Answers

- **What is this?** Hi-Gear HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres by hi-gear
- **How much does it cost?** B/.80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/56394672-hi-gear-hg9048s-insta-seal-head-gasket-fix-permanent-engine)

## Best For

- hi-gear enthusiasts

## Why This Product

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

## Key Features

- • **Ceramic-Copper Fusion:** Microfibers & copper create a heat-conductive, durable weld
- • **Engine-Life Longevity:** Once sealed, lasts the entire engine lifespan—no repeat fixes
- • **Instant Leak Lockdown:** Seals large & micro cracks fast for zero downtime
- • **Cooling System Friendly:** Non-corrosive formula protects your radiator & core plugs
- • **Universal Engine Compatibility:** Safe on aluminum, cast iron & plastic cooling parts

## Overview

Hi-Gear HG9048s Insta-Seal is a 236ml liquid ceramic-microfiber and copper-based engine block sealer designed to permanently fix leaks in head gaskets, cracked cylinder heads, radiators, and core plugs. Compatible with aluminum, cast iron, and plastic components, it forms a heat-resistant, durable weld that expands and contracts with engine temperature changes, ensuring a lasting seal that protects the cooling system without damage.

## Description

Hi-Gear Insta-Seal quickly and permanently seals large and small leaks in blown head gaskets, cracked cylinder heads, heater matrix, core plugs and leaking radiators in all types of aluminum and cast iron engines. Insta-Seal is safe for use with all types of antifreeze. Insta-Seal will not harm the cooling system when used correctly. Hi-Gear Insta-Seal is formulated with ceramic micro-fibres and copper fines of varying size to ensure a fast and permanent seal of holes or cracks in the cooling system. The ceramic micro-fibers and copper flow into cracks so fine that they cannot be seen by the human eye to form an extra-strong seal within the crack or hole. The crack or hole is actually filled, from top to bottom, with the ceramic micro-fibers and copper forming a complete “weld”. Even through the ceramic micro-fibres and copper are fine enough to flow into the smallest of cracks, they interweave to seal even the largest of cracks and holes. Once the “weld' is complete Hi-Gear Insta-Seal lasts the life of the engine. Copper not only aids in creating an extra-strong seal, but it also conducts heat across the crack or holes thereby eliminating hot spots that normally form on the edges of a crack or hole. Copper is very friendly to all components in the engine. Hi-Gear Insta-Seal is formulated to expand and contract with the temperature changes of the engine and radiator during start-up, running and shutdown and is heat resistant to over 200 degrees C.

Review: Recommended - Done. Good product.
Review: Didn't work - It didn't work all it done was block my pipes and exploded out of my expansion tank all over my car and engine bay I bought steal seal like a neon green bottle it worked first go don't buy this

## Features

- Causes serious eye irritation.
- Causes skin irritation.
- Harmful if swallowed.
- May cause an allergic skin reaction.
- May cause damage to organs (kidney) through prolonged or repeated exposure (if swallowed).
- Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 236 millilitres
- Hi-Gear Insta-Seal quickly and permanently seals large and small leaks in blown head gaskets
- Works on cracked cylinder heads, heater matrix, core plugs and leaking radiators in all types of aluminum and cast iron engines
- Hi-Gear Insta-Seal will not harm the cooling system when used correctly
- Once the 'weld' is complete Hi-Gear Insta-Seal lasts the life of the engine

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005VXFBIC |
| Best Sellers Rank | 48,608 in Automotive ( See Top 100 in Automotive ) 374 in Fillers, Adhesives & Sealants |
| Brand | Hi-Gear |
| Colour | clear |
| Compatible Material | Aluminum, Plastic, Cast Iron |
| Customer Reviews | 3.7 out of 5 stars 143 Reviews |
| Global Trade Identification Number | 00009603190484 |
| Item Dimensions | 5.7 x 5.7 x 18.1 centimetres |
| Item Form | Liquid |
| Item Weight | 272 g |
| Item dimensions L x W x H | 5.7 x 5.7 x 18.1 centimetres |
| Item weight | 272 g |
| Manufacturer | Hi-Gear |
| Manufacturer Part Number | HG9048S |
| Material | Plastic |
| Model Number | HG9048s |
| Number of Items | 1 |
| Number of Packs | 1 |
| Style | Liquid ceramic-microfiber and copper sealant |
| Style Name | Liquid ceramic-microfiber and copper sealant |
| Supported Standards | ASTM C-920 |
| Surface Recommendation | Core Plugs, Cylinder Head, Engine Block, Heater Matrix, Radiator |
| UPC | 009603190484 |
| Unit Count | 236.0 millilitre |
| Water Resistance Level | Water Resistant |
| Water resistance level | Water Resistant |

## Product Details

- **Brand:** Hi-Gear
- **Item dimensions L x W x H:** 5.7 x 5.7 x 18.1 centimetres
- **Item weight:** 272 g
- **Material:** Plastic
- **Style:** Liquid ceramic-microfiber and copper sealant

## Images

![Hi-Gear HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres - Image 1](https://m.media-amazon.com/images/I/51xvmpfhAPL.jpg)
![Hi-Gear HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres - Image 2](https://m.media-amazon.com/images/I/61vhsxqk5oL.jpg)
![Hi-Gear HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres - Image 3](https://m.media-amazon.com/images/I/6110UmCEutL.jpg)
![Hi-Gear HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres - Image 4](https://m.media-amazon.com/images/I/61Ch3Uf0JwL.jpg)
![Hi-Gear HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres - Image 5](https://m.media-amazon.com/images/I/71vt8GMTHDL.jpg)

## Questions & Answers

**Q: After you use it you have to change the motor oil my oil  look like milk ?**
A: A water cooling system leak into the interior of the engine mixing with the oil lubricating system produces a yellowish off white foam.  Either a cracked block or head or a leaking head gasket are the usual suspect for this.  I even have had a badly leaking cooling tube under the intake manifold on a 4.6 Liter Ford that no coolant leak additive could fix--a removal of intake manifold and replacement of tube was the only fix.  It is very common for Aluminum head/block warpage due to even a one time overheating to cause head gasket leakage that only engine teardown and having the warp leveled can fix.  For reasonably small leaks, I have used radiator sealer to stop them.

**Q: Do you have to flush the radiator first?**
A: Yes, I would flush it first, then add the installation seal.

**Q: Does it says for how many cylinders it will work per .oz used**
A: Didn't work on 6 cylinder for me.

**Q: Will this work on a cracked block and water cooled manifold in a closed Mercruiser 5.7 liter V8 boat engine?  Thanks.**
A: It depends on how big the crack is.  If very big probely not.  My experience with with water manifold not likely.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Recommended
*by T***A on 29 September 2026*

Done. Good product.

### ⭐ Didn't work
*by C***. on 2 January 2022*

It didn't work all it done was block my pipes and exploded out of my expansion tank all over my car and engine bay I bought steal seal like a neon green bottle it worked first go don't buy this

### ⭐⭐⭐⭐⭐ Saved my engines twice!
*by A***R on 15 October 2019*

Brilliant stuff and really does work. I tried it on my Landrover discovery and it stopped a leak that I suspect was a head gasket. I had a Volvo 940 Turbo that did have a head gasket problem. It worked on that too got another £10,000 miles out of it.

## Frequently Bought Together

- Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz.
- K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required
- K-Seal ST3501 Pour and Go Head Gasket Sealer, 16oz, Permanent Repair for Blown Head Gaskets, Cracked Heads and Blocks

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-10-09*