---
product_id: 57030826
title: "Sodium Silicate 40% - Water Glass (1 Gallon)"
brand: "cq concepts inc."
price: "¥22407"
currency: JPY
in_stock: true
reviews_count: 8
category: "Cq Concepts Inc."
url: https://www.desertcart.jp/products/57030826-sodium-silicate-40-water-glass-1-gallon
store_origin: JP
region: Japan
---

# 40% pure sodium silicate concentration Concrete sealer & industrial-grade strength 4:1 dilution ratio for versatile sealing Sodium Silicate 40% - Water Glass (1 Gallon)

**Brand:** cq concepts inc.
**Price:** ¥22407
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal smart, last longer — the ultimate fix for pros who demand durability!

## Quick Answers

- **What is this?** Sodium Silicate 40% - Water Glass (1 Gallon) by cq concepts inc.
- **How much does it cost?** ¥22407 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/57030826-sodium-silicate-40-water-glass-1-gallon)

## Best For

- cq concepts inc. enthusiasts

## Why This Product

- Trusted cq concepts inc. brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Dilution:** Optimized 4:1 water-to-product ratio ensures perfect sealing every time.
- • **Glass-Like Durability:** Dries to a resilient, non-toxic glassy finish for long-lasting protection.
- • **Proven Automotive Fix:** Endorsed by users for effective head gasket leak repair on aluminum engines.
- • **Heat-Activated Sealant:** Coagulates only at high temperatures, targeting leaks without clogging cooling systems.
- • **Multi-Use Industrial Grade:** Trusted for concrete sealing, forge lining, and automotive gasket repair.

## Overview

Sodium Silicate 40% (Water Glass) is a versatile, non-hazardous industrial chemical that dries into a tough, glass-like layer. Dilutable at a precise 4:1 ratio, it excels as a concrete sealer and a heat-activated automotive gasket repair solution, trusted by professionals for its targeted sealing and long-term durability.

## Description

Sodium Silicate 40% is a product commonly called "Water Glass". This non-hazardous chemical dries to glass like substance. Diluted 4:1 with water it can be used as a concrete sealer among other uses.

Review: Never knew something like this existed - I use some of this for the inside of my Forge works great, and stays in water to seal the head gasket as well make with cement in the insides are used sodium silicate
Review: Will fix a head gasket leak that is a breach where exhaust is pumped into cooling system. - This worked for my 04 toyota 4 runner aluminum block and head. I tested this product with both green and red antifreeze in which it coagulated badly in a cup. To have success with this product you must drain all coolant from the motor. You need 16 ounces of product for a 4 cylinder, 24 ounces for a 6 cylinder and 32 ounces for a v6. It is imperative you drain the coolant. Do not add coolant until you drain the product. Drive it with only water and product for a couple months and you will have months of operation with no problem. Because my motor is aluminum head and block and freezing isnt a huge issue where I live Ive opted to just run the vehicle with water and product. I havnt had a problem one so far. Hope this helps. You do not need to bypass the radiator or heater core as this product only coagulates around the piston where you need it because of the very high temperatures. It will not coagulate anywhere else so you do not need to drain it unless you intend to add antifreeze. This product plus antifreeze equals a gelled mess you do not want in your motor.

## Features

- Water Glass
- 3.42 Weight Ratio
- Concrete selaer
- Technical Grade

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00QL4ZV0I |
| Best Sellers Rank | #152,131 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #363 in Hardware Sealers |
| Customer Reviews | 4.3 4.3 out of 5 stars (147) |
| Date First Available | December 4, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 12 pounds |
| Manufacturer | CQ Concepts Inc |
| Product Dimensions | 6 x 6 x 12 inches |

## Product Details

- **Brand:** CQ Concepts Inc.
- **Item Form:** Liquid
- **Item Volume:** 1 Gallons
- **Item Weight:** 12 Pounds
- **Package Information:** Bottle

## Images

![Sodium Silicate 40% - Water Glass (1 Gallon) - Image 1](https://m.media-amazon.com/images/I/618upk9jYxL.jpg)

## Questions & Answers

**Q: What is the ratio to water in an auto engine as a sealer. I have read 2.5%  to 5% of capacity ?**
A: Get engine warm and add 1 quart. Did this on a cracked head in a 62 Chevy. Worked great.

**Q: Can waterglass be used to preserve eggs ?**
A: If you Google water glass (two words) you will find many references to preserving eggs in water glass for 18 to 24 months without refrigeration. My Dad's family did this.

**Q: is it pre diluted or dose it need to be diluted**
A: This product is a 40% solution and can be diluted depending on your application.  We do not have application specific instructions so it is up to the consumer to know how to properly apply the product.

**Q: Could be used with  sand to be hardener with CO2? To make sand core in foundry industries**
A: yes it is a very good hardener.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Never knew something like this existed
*by N***G on October 17, 2023*

I use some of this for the inside of my Forge works great, and stays in water to seal the head gasket as well make with cement in the insides are used sodium silicate

### ⭐⭐⭐⭐⭐ Will fix a head gasket leak that is a breach where exhaust is pumped into cooling system.
*by F***D on September 6, 2021*

This worked for my 04 toyota 4 runner aluminum block and head. I tested this product with both green and red antifreeze in which it coagulated badly in a cup. To have success with this product you must drain all coolant from the motor. You need 16 ounces of product for a 4 cylinder, 24 ounces for a 6 cylinder and 32 ounces for a v6. It is imperative you drain the coolant. Do not add coolant until you drain the product. Drive it with only water and product for a couple months and you will have months of operation with no problem. Because my motor is aluminum head and block and freezing isnt a huge issue where I live Ive opted to just run the vehicle with water and product. I havnt had a problem one so far. Hope this helps. You do not need to bypass the radiator or heater core as this product only coagulates around the piston where you need it because of the very high temperatures. It will not coagulate anywhere else so you do not need to drain it unless you intend to add antifreeze. This product plus antifreeze equals a gelled mess you do not want in your motor.

### ⭐⭐⭐⭐ Good product
*by C***G on January 25, 2024*

Shipping was more than the product. Be aware.

## Frequently Bought Together

- Sodium Silicate 40% (Water Glass)
- Fireworks 1-Pound Kiln Wash
- CCHUIXI Heat Resistant Tape, Kapton Tape, polyimide Film Tape for PCB Masking, Battery Wrapping, Electrical tasks, No Glue Residue.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-21*