---
product_id: 746649732
title: "BLACK OXIDE CONCENTRATE 1 QT"
brand: "caswell"
price: "$1241707"
currency: COP
in_stock: true
reviews_count: 5
category: "Caswell"
url: https://www.desertcart.co/products/746649732-black-oxide-concentrate-1-qt
store_origin: CO
region: Colombia
---

# 1:9 concentrate-to-water mix ratio 600-1200 sq.ft. coverage/gallon 30 sec–10 min immersion time BLACK OXIDE CONCENTRATE 1 QT

**Brand:** caswell
**Price:** $1241707
**Availability:** ✅ In Stock

## Summary

> 🖤 Elevate your steel game—black oxide brilliance in a bottle!

## Quick Answers

- **What is this?** BLACK OXIDE CONCENTRATE 1 QT by caswell
- **How much does it cost?** $1241707 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/746649732-black-oxide-concentrate-1-qt)

## Best For

- caswell enthusiasts

## Why This Product

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

## Key Features

- • **Room Temperature Ready:** No special heating needed—blacken with ease anywhere, anytime.
- • **Rapid Blackening Action:** Transform steel in as little as 30 seconds—speed meets precision.
- • **Customizable Concentration:** Dilute 1:9 for perfect black oxide solution every time.
- • **Seamless Finish Protection:** Pair with Caswell Sealers to lock in that sleek, durable black finish.
- • **Unmatched Surface Coverage:** Blacken up to 1200 sq.ft. per gallon—maximize your project scope.

## Overview

Caswell Black Oxide Concentrate is a professional-grade liquid solution designed to blacken iron and steel parts efficiently. With a 1:9 dilution ratio, it covers up to 1200 sq.ft. per gallon and requires only 30 seconds to 10 minutes immersion at room temperature. Ideal for industrial and DIY projects, it must be sealed post-treatment for lasting protection. Ground shipping applies within the Continental USA.

## Description

Blackens steel and iron parts (not stainless steel). Parts must be sealed after blackening. Use our Penetrating Sealer or Caswell Sealer. Mix 1 part Concentrate with 9 parts distilled water. 1 quart of concentrate makes 2.5 gallons of blackening solution. Parts Coverage - 600 to 1200 sq. ft. of surface area blackened per gallon of concentrate. Immerse the part in the mixed Black Oxide Solution and swirl around for between 30 seconds and 5 minutes. Alternatively, the part may simply be placed in the solution for 5 - 10 minutes. Remove the part from the solution and rinse in fresh water. Use at room temperature. Contains Hazardous Goods. Shipping restrictions apply. Ground shipping only to the Continental USA. Please call +1 315 946 1213 or contact us for rates to other locations.

Review: Worked great when used as directed.
Review: works well

## Features

- Brand: Caswell
- Material: Iron and Steel
- Manufacturer: Caswell

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09MR7SK8L |
| ASIN  | B09MR7SK8L |
| Brand | Caswell |
| Customer Reviews | 4.4 4.4 out of 5 stars (49) |
| Customer reviews | 4.4 4.4 out of 5 stars (49) |
| Date First Available | 24 June 2025 |
| Format | Liquid |
| Item Weight  | 1.09 kg |
| Manufacturer  | Caswell |
| Manufacturer reference  | BOCONC1Q |
| Units | 32.0 Milliliters |

## Product Details

- **Brand:** Caswell
- **Item form:** Liquid
- **Item weight:** 2.4 Pounds
- **Manufacturer:** Caswell
- **Unit count:** 32.0 Milliliters

## Images

![BLACK OXIDE CONCENTRATE 1 QT - Image 1](https://m.media-amazon.com/images/I/41YqbjCFJ4L.jpg)

## Questions & Answers

**Q: Im not sure what type of metal im using it on. It is non magnetic. Will this black oxide harm the metal in any way or will it just not have an affect?**
A: If it’s non magnetic, then this will not work. Whether it would harm the metal is dependent on what sort of metal it is.

**Q: Will this work on a steel putter head?**
A: Yes, as long as it is carbon steel. If you don’t like the final finish, it is as easy as sanding the putter back to its original state. I hope this helps.

**Q: Once sealed, can the oil be removed to avoid atracking dust? Looking for something to restore typewriter linkages, and they must be assembled "dry".**
A: This product is just the blackener. The sealer is not included. If you want a dry finish, seal it with our "Caswell Sealer" as opposed to the oily penetrating sealer.

**Q: Will this work on Aluminum Alloy ?**
A: This will not work for aluminum. There is another product that you can order online that will darken aluminum. I do not remember the name specifically.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***U on 12 September 2025*

Worked great when used as directed.

### ⭐⭐⭐⭐⭐ Review
*by J***H on 30 June 2025*

works well

### ⭐⭐⭐⭐⭐ Review
*by L***N on 5 December 2025*

As long as your steel is clean this will do wonders for your surface finish!

## Frequently Bought Together

- Caswell BLACK OXIDE CONCENTRATE 1 QT
- Caswell PENETRATING SEALER 1QT
- Caswell Black Oxide Activator 1 Pint (Makes 1.25 Gallons)

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-03-12*