---
product_id: 13780562
title: "SEM 69504 Rust Mort - 1 Quart"
brand: "sem"
price: "456 Lei"
currency: RON
in_stock: true
reviews_count: 8
url: https://www.desertcart.ro/products/13780562-sem-69504-rust-mort-1-quart
store_origin: RO
region: Romania
---

# Insoluble black coating 1 Quart liquid volume Acid-based rust converter SEM 69504 Rust Mort - 1 Quart

**Brand:** sem
**Price:** 456 Lei
**Availability:** ✅ In Stock

## Summary

> ⚡️ Convert Rust, Command Respect – Protect Your Metal Like a Pro!

## Quick Answers

- **What is this?** SEM 69504 Rust Mort - 1 Quart by sem
- **How much does it cost?** 456 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/13780562-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

- • **Metal Mastery:** Specifically formulated for metal surfaces to ensure maximum adhesion and durability.
- • **Generous Coverage:** 1 quart size offers ample volume for multiple projects or large surface areas.
- • **Sleek Black Finish:** Flat, smooth black coating adds a professional, corrosion-resistant layer.
- • **Trusted Brand Quality:** SEM’s proven formula guarantees reliable performance and peace of mind.
- • **Ultimate Rust Defense:** Transforms rust into a stable, paint-ready surface for lasting protection.

## Overview

SEM 69504 Rust Mort is a 1-quart acid-based rust converter that chemically transforms rust on metal surfaces into a stable, black, insoluble coating. Designed for professional-grade corrosion protection, it provides a flat, smooth finish ideal for painting or further treatment, ensuring long-lasting durability and metal preservation.

## Description

SEM 69504 Rust Mort - 1 Quart

## Features

- RUST-MORT

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Black |
| Brand | SEM |
| Surface Recommendation | Metal |
| Model Name | 69504 |
| Size | 1 Quart |
| Coating Description | Insoluble black coating |
| Item dimensions L x W x H | 13.63 x 10.25 x 9.81 inches |
| Item Weight | 8 ounces |
| Finish Type | Flat, Smooth Black |
| Coverage | Depends on surface area and concentration |
| Opacity | 1 inches |
| Compatible Material | Metal |
| Liquid Volume | 1 Quarts |
| Base Material | Acid |
| Package Information | Can |
| Number of Items | 1 |
| Manufacturer | SEM |
| Unit Count | 32.0 Fluid Ounces |
| Global Trade Identification Number | 00646786695049 |
| UPC | 646786695049 467866950496 |
| Product Dimensions | 13.63 x 10.25 x 9.81 inches |
| Item model number | 69504 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 69504 |

## Product Details

- **Color:** Black
- **Brand:** SEM
- **Surface Recommendation:** Metal
- **Model Name:** 69504
- **Size:** 1 Quart

## 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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works fantastic !
*by F***. on June 19, 2025*

Rust Mort is awesome. I have been using it for 19 years. You can work the metal the next day !

### ⭐⭐⭐⭐⭐ Works well
*by A***. on June 20, 2025*

If you're painting over something that has rust it's a must

### ⭐⭐⭐⭐⭐ Excellent
*by A***R on May 17, 2025*

Husband very happy!

## 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.ro/products/13780562-sem-69504-rust-mort-1-quart](https://www.desertcart.ro/products/13780562-sem-69504-rust-mort-1-quart)

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-13*