---
product_id: 398489703
title: "Caswell BLACK OXIDE CONCENTRATE 1 QT"
brand: "caswell"
price: "¥24926"
currency: JPY
in_stock: true
reviews_count: 8
category: "Caswell"
url: https://www.desertcart.jp/products/398489703-caswell-black-oxide-concentrate-1-qt
store_origin: JP
region: Japan
---

# Caswell BLACK OXIDE CONCENTRATE 1 QT

**Brand:** caswell
**Price:** ¥24926
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Caswell BLACK OXIDE CONCENTRATE 1 QT by caswell
- **How much does it cost?** ¥24926 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/398489703-caswell-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

## Description

Caswell BLACK OXIDE CONCENTRATE 1 QT - desertcart.com

Review: Loved it. - Worked great when used as directed.
Review: Good quality - works well

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09MR7SK8L |
| Best Sellers Rank | #165,129 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #409 in Hardware Sealers |
| Color | black |
| Customer Reviews | 4.5 4.5 out of 5 stars (51) |
| Date First Available | November 29, 2021 |
| Item Weight | 2.4 pounds |
| Manufacturer | Caswell |
| Material | Iron and Steel |
| Part Number | BOCONC1Q |
| Style | Compact |

## Product Details

- **Brand:** Caswell
- **Item Form:** Liquid
- **Item Weight:** 2.4 Pounds
- **Manufacturer:** Caswell
- **Unit Count:** 32.0 Fluid Ounces

## Images

![Caswell 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

### ⭐⭐⭐⭐⭐ Loved it.
*by C***U on September 12, 2025*

Worked great when used as directed.

### ⭐⭐⭐⭐⭐ Good quality
*by J***H on June 30, 2025*

works well

### ⭐⭐⭐⭐⭐ A must have for knife making!
*by L***N on December 5, 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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**Shop now:** [https://www.desertcart.jp/products/398489703-caswell-black-oxide-concentrate-1-qt](https://www.desertcart.jp/products/398489703-caswell-black-oxide-concentrate-1-qt)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-24*