---
product_id: 405334758
title: "PENETRATING SEALER 1QT"
brand: "caswell"
price: "£31.82"
currency: GBP
in_stock: true
reviews_count: 7
category: "Caswell"
url: https://www.desertcart.co.uk/products/405334758-penetrating-sealer-1qt
store_origin: GB
region: United Kingdom
---

# PENETRATING SEALER 1QT

**Brand:** caswell
**Price:** £31.82
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** PENETRATING SEALER 1QT by caswell
- **How much does it cost?** £31.82 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/405334758-penetrating-sealer-1qt)

## 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 Penetrating Sealer is used after applying a black oxide coating onto steel or iron parts. It imparts a slightly oily feel to the parts, which displaces moisture and prevents rust. After sealing, dip or brush the parts with the sealer and allow to contact the part for 1-5 minutes. After sealing, shake off excess and allow to dry.

Review: Works as a sealer against black oxide finishes. - After chemically changing the iron surface, this sealer does inhibit the formation of rust. It doesn't add much in terms of gloss however, or darkening.
Review: Good product - Works well

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09MR738BC |
| Best Sellers Rank | #173,082 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #542 in Hardware Sealers |
| Brand | Caswell |
| Brand Name | Caswell |
| Color | Black |
| Customer Reviews | 4.6 out of 5 stars 28 Reviews |
| Item Weight | 1.6 Pounds |
| Manufacturer | Caswell |
| Manufacturer Part Number | PSEAL1Q |
| Material | Acrylic, Polyurethane |
| Material Type | Acrylic, Polyurethane |
| Number of Items | 1 |
| Unit Count | 1.0 Count |

## Product Details

- **Material:** Polyurethane, Acrylic
- **Brand:** Caswell
- **Style:** Liquid
- **Item Weight:** 1.6 Pounds
- **Compatible Material:** Alloy Steel

## Images

![PENETRATING SEALER 1QT - Image 1](https://m.media-amazon.com/images/I/51H1JMHSLnL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as a sealer against black oxide finishes.
*by A***M on July 20, 2025*

After chemically changing the iron surface, this sealer does inhibit the formation of rust. It doesn't add much in terms of gloss however, or darkening.

### ⭐⭐⭐⭐⭐ Good product
*by J***H on June 9, 2025*

Works well

### ⭐⭐⭐⭐⭐ Good product
*by B***N on May 12, 2024*

Follow the instructions

## Frequently Bought Together

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

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**Shop now:** [https://www.desertcart.co.uk/products/405334758-penetrating-sealer-1qt](https://www.desertcart.co.uk/products/405334758-penetrating-sealer-1qt)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-16*