Built for the job.
Rust Mort™ is an acidic compound that removes or converts existing rust to an insoluble black coating prior to applying body filler, primer or top coat.
Rust Mort™ 69504 Acidic Compound is a 1-qt green formulation designed for aggressive rust removal and surface preparation on automotive body panels and related substrates.
The compound works on bare metal, concrete, plastic, and primer-coated surfaces, delivering high VOC content of 173 g/L for rapid reaction. Its flash point of 100 °C allows safe handling under typical shop temperatures while providing effective acidic action to dissolve rust without excessive heat buildup. The product should be stored in a cool, dry, well-ventilated area to maintain stability.
Due to acute toxicity, eye damage, skin corrosion, and aquatic hazards (GHS H314, H318), use requires full PPE: chemical-resistant gloves, eye protection, protective clothing, and a respirator. Ensure adequate ventilation during application, and neutralize any spillage on concrete according to the cleanup guidelines.
Why Pros Choose SEM SEM
- Converts and removes light rust
- Converts heavy rust into a stable, workable substrate
- Creates ideal surface for filler or primer
- Easy to use
- Ready to apply
- Requires minimal surface preparation
- Minimal surface preparation
How to Use
For use on rusted ferrous metal
Compatibility
Compatible substrates: Body Filler.
Specifications
| Part No. | 69504 |
|---|---|
| Product Line | SEM |
| MFR Model | 69504 |
| Application | For use on rusted ferrous metal |
| Manufacturer | SEM |
| UPC | 646786695049 |
| Brand | Rust Mort™ |
| Maximum Sale Quantity | 6 |
| Maximum Sale Day | 7 |
| Rubberized | No |
| Color | Green |
| Container Size (qt) | 1 |
| Container Type | Bottle |
| Form | Liquid |
| Finish | Matte |
- VOC
- 173 g/L
- Shelf Life
- Store in a cool, dry place with adequate ventilation away from …
- Compatible Substrates
- Bare metal, concrete, plastic, primer
- Cleanup
- Neutralize any spillage on concrete
About SEM
SEM Products specializes in paint adhesion systems, flexible coatings, and plastic repair — the go-to choice for interior and trim refinishing.
Frequently Asked Questions
What substrates are compatible with Rust Mort™ Acidic Compound?
It can be applied to bare metal, concrete, plastic, and primer-coated surfaces.
What personal protective equipment is required when handling this product?
Wear eye protection, chemical-resistant gloves, protective clothing, and a respirator as recommended in the SDS.
What is the flash point of Rust Mort™ Acidic Compound?
The flash point is 100 °C.
How should accidental spills on concrete be dealt with?
Spills must be neutralized according to the product’s cleanup instructions before disposal.
Documents & Safety
- Safety Data Sheet (SDS)
- rustmort_69504_specification_sheet.pdf
- 69501,69508%20Rust%20MortUSA.pdf
Signal Word: Danger.
Required PPE: wear safety goggles or face shield, chemical-resistant gloves, protective clothing (coveralls), and a suitable respirator when ventilation is inadequate.
Key hazards: the compound can cause severe skin burns and eye damage, is toxic if inhaled or swallowed, poses reproductive risks, and is harmful to aquatic life. Use only in well-ventilated areas and avoid any contact with skin, eyes, or clothing.
Always refer to the full SDS before use.
Why Buy from autofxmart
- Authorized distributor — authentic, factory-fresh stock.
- Fast US shipping — most orders ship within 1 business day.
- 30-day returns — buy with confidence.
- Pro-shop pricing — bulk discounts available on request.
- Expert support — questions? Email us at [email protected].
