---
product_id: 51362247
title: "Black Oxide Concentrate - 5 Gallon"
brand: "caswell"
price: "$U106953"
currency: UYU
in_stock: true
category: "Caswell"
url: https://www.desertcart.uy/products/51362247-black-oxide-concentrate-5-gallon
store_origin: UY
region: Uruguay
---

# Blackens steel & iron, not stainless 5 gal concentrate = 45 gal solution Room temp use, no fumes or heaters Black Oxide Concentrate - 5 Gallon

**Brand:** caswell
**Price:** $U106953
**Availability:** ✅ In Stock

## Summary

> 🖤 Elevate your metalwork game—blacken smarter, not harder!

## Quick Answers

- **What is this?** Black Oxide Concentrate - 5 Gallon by caswell
- **How much does it cost?** $U106953 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/51362247-black-oxide-concentrate-5-gallon)

## 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

- • **Customizable Immersion Time:** Control your finish from 30 seconds to 5 minutes for precision blackening tailored to your needs.
- • **Sealing Ready for Durability:** Pair with Caswell sealers to lock in that flawless black oxide finish and protect your parts long-term.
- • **Maximized Coverage Efficiency:** One gallon of concentrate covers up to 1200 sq. ft., delivering unbeatable value for large projects.
- • **Effortless Industrial Blackening:** Transform steel & iron surfaces with a sleek, matte black finish—no heat or hazardous fumes needed.
- • **Simple Room Temperature Application:** Mix and use at room temp—no special equipment or ventilation required, perfect for any workspace.

## Overview

Caswell's Black Oxide Concentrate is a 5-gallon industrial-grade solution that blackens steel and iron parts at room temperature without hazardous fumes or heating. One gallon of concentrate yields 9 gallons of ready-to-use solution, covering up to 1200 sq. ft. per gallon. Ideal for professional metal finishing, it requires sealing post-blackening for durability and is shipped ground 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. (not included)Mix 1 part Concentrate with 9 parts distilled water. 5 gallons of concentrate makes 45 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. 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.

## Features

- Blackens Steel & Iron (not stainless steel)
- Room Temperature Solution - No Dangerous Fumes Or Heaters Requred
- 5 Gallons of Concentrate Makes 45 Gallons Total Bath
- Mix With Distilled Water
- Blackened Parts Require Sealing After Blackening

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B073WJXQ1W |
| Date First Available  | July 12, 2017 |
| Is Discontinued By Manufacturer  | No |
| Manufacturer  | Caswell Inc |
| Package Dimensions  | 17 x 12 x 12 inches; 55 Pounds |

## Product Details

- **Brand:** Caswell
- **Item Form:** Liquid
- **Item Weight:** 55 Pounds
- **Number of Items:** 1
- **Surface Recommendation:** Alloy Steel, Metal

## Images

![Black Oxide Concentrate - 5 Gallon - Image 1](https://m.media-amazon.com/images/I/71Gas2WqWeL.jpg)

## Frequently Bought Together

- Black Oxide Concentrate - 5 Gallon
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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-04*