---
product_id: 337571099
title: "SEM 69504 Rust Mort - 1 Quart"
brand: "sem"
price: "€ 156.00"
currency: EUR
in_stock: true
url: https://www.desertcart.ie/products/337571099-sem-69504-rust-mort-1-quart
store_origin: IE
region: Ireland
---

# Smooth flat black finish Water-based formula Rust converting power SEM 69504 Rust Mort - 1 Quart

**Brand:** sem
**Price:** € 156.00
**Availability:** ✅ In Stock

## Summary

> 🛠️ Convert rust, conquer corrosion – protect your metal like a pro!

## Quick Answers

- **What is this?** SEM 69504 Rust Mort - 1 Quart by sem
- **How much does it cost?** € 156.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/337571099-sem-69504-rust-mort-1-quart)

## Best For

- sem enthusiasts

## Why This Product

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

## Key Features

- • **Sleek Black Finish:** Provides a professional, flat black coating that blends seamlessly on metal surfaces.
- • **Ultimate Rust Defense:** Transforms rust into a stable, paintable surface for lasting protection.
- • **Versatile Application:** Perfect for both interior and exterior metal surfaces, ensuring broad usability.
- • **Eco-Friendly Water Base:** Low odor, easy cleanup, and safer for your workspace and environment.
- • **Ready to Use Quart Size:** Generous 1-quart volume designed for multiple projects without frequent refills.

## Overview

SEM 69504 Rust Mort is a water-based, acid rust converter that transforms rust into a durable, paintable black coating. Designed for metal surfaces, it offers a smooth, flat finish suitable for both interior and exterior use. Packaged in a convenient 1-quart can, this product provides effective rust protection with easy application and cleanup, made in the USA.

## Description

69504 Rust Mort - 1 Quart

## Features

- RUST-MORT

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Colour | Black |
| Brand | SEM |
| Surface Recommendation | Metal |
| Material | Water Based |
| Model Name | 69504 |
| Size | 1 Quart |
| Coating Description | Insoluble black coating |
| Item dimensions L x W x H | 34.6 x 26 x 24.9 Centimeters |
| Item Weight | 0.5 Pounds |
| Finish Type | Flat, Smooth Black |
| Recommended Uses For Product | Exterior, Interior |
| Coverage | Depends on surface area and concentration |
| Opacity | 1 inches |
| Special Feature | Rust Converting |
| Compatible Material | Metal |
| Liquid Volume | 1 Quarts |
| Base Material | Acid |
| Package Information | Can |
| Number of Items | 1 |
| Manufacturer | SEM |
| Net Quantity | 32.0 Fl Oz |
| Global Trade Identification Number | 00646786695049 |
| UPC | 646786695049 467866950496 |
| Product Dimensions | 34.62 x 26.04 x 24.92 cm; 226.8 g |
| Item model number | 69504 |
| Manufacturer Part Number | 69504 |
| Assembly Required | No |
| Special Features | Rust Converting |
| Country of Origin | USA |
| Item Weight | 227 g |

## Product Details

- **Colour:** Black
- **Brand:** SEM
- **Surface Recommendation:** Metal
- **Material:** Water Based
- **Model Name:** 69504

## Images

![SEM 69504 Rust Mort - 1 Quart - Image 1](https://m.media-amazon.com/images/I/31TXzwbQYOS.jpg)

## Questions & Answers

**Q: Does this product come with a spray top?  All the videos I see of this bottle have a spray top.**
A: Mine did not. It is a fairly aggressive product so you have be careful. I would think spraying might be a bad idea. I painted 3 coats and it worked great in my application

**Q: How much will one quart cover? Enough for the bed of a Toyota pick up?**
A: Hi Eric. You do use it sparingly, brush it on like a very thin paint. It takes three coats normally and you only use it on surfaces that need the rust conversion. I assume your entire bed is not rusted out. This will restore the metal and add strength so it acts like metal instead of crumbling. Be aware you will need to paint it within 24 hours. You can paint or primer but the surface can't be left exposed. I would start with a quart, I think that should be fine.

**Q: What is the shelf life of this product after opening?**
A: Years! I first bought Rust Mort twenty years ago and it worked until I used it all. So I bought more from Amazon.

**Q: how well does this work I don't want to be buying a dozen different rust removers is it better than naval jelly for instance?**
A: I think it works awesome you just paint it on it turns black you paint right over it, I did some light brushing wear it was knotted up to smooth it out some but didn’t make a big deal out of wire brushing. I used on a horse trailer and on some galvanized pipe for poles on my deck 3-4 years ago on trailer still no rust thru paint.  I’d give it a 10 out if 10

## Frequently Bought Together

- SEM 69504 Rust Mort - 1 Quart
- Pro Grade, Paint Brushes, 5-Piece, Paint Brush Set: Flat & Angle Brushes for Latex and Oil Paints, Stains, Interior & Exterior Home Improvement
- Eastwood Matte Black Rust Encapsulator Plus | Long Lasting Durable Finish 1 Coat Maximum Rust Protection | Heat Resistance up to 350 degrees Fahrenheit | 1 Quart, Matte Black

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ie/products/337571099-sem-69504-rust-mort-1-quart](https://www.desertcart.ie/products/337571099-sem-69504-rust-mort-1-quart)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-10*