SEM
Rust Mort™ 69508 Green Acidic Compound 1 pt Bottle
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Hazardous material · Liquid
Liquid hazmat ships ground-only via UPS/FedEx with a per-item carrier surcharge applied at checkout.
Shipping restrictions apply
Ground freight only (UPS/FedEx). Cannot ship via Air, USPS, or to PO boxes. APO/FPO addresses excluded.
WARNING: Cancer & Reproductive Harm
This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.Tap for details → P65Warnings.ca.gov
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Overview
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™ 69508 Acidic Compound is a high-performance rust remover formulated for professional body shop applications. Delivered in a 1 pt green bottle, it penetrates and dissolves active corrosion on bare metal, concrete, plastic, and primed surfaces, preparing the substrate for repair or coating.
The formula contains 173 g/L VOCs and is designed for use in well-ventilated areas. It provides rapid action without a specified flash time, allowing technicians to work efficiently while maintaining control of the reaction. Compatibility with multiple substrates reduces the need for separate cleaners, streamlining prep work and improving overall workflow.
Handling requires full PPE: eye protection, chemical-resistant gloves, protective clothing, and a respirator due to acute toxicity, skin corrosion, and aquatic hazards (GHS H314, H318). The product has a flash point of 100 °C; any spillage on concrete must be neutralized according to the safety data sheet.
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
- Verify that the substrate is one of the compatible materials: bare metal, concrete, plastic, or primer-coated surface.
- Clean the area to remove loose rust, oil, grease, and debris; ensure the surface is dry before application.
- Apply Rust Mort™ 69508 Acidic Compound directly to the prepared surface using a brush or roller, covering the target area uniformly.
- Allow the compound to cure as directed by the product's technical data (no specific time provided).
- If any spillage occurs on concrete, neutralize the affected area before disposal according to the cleanup instructions.
Compatibility
Compatible substrates: Body Filler.
Specifications
| Part No. | 69508 |
|---|---|
| Product Line | SEM |
| MFR Model | 69508 |
| Application | For use on rusted ferrous metal |
| Manufacturer | SEM |
| UPC | 646786695087 |
| Brand | Rust Mort™ |
| Maximum Sale Quantity | 3 |
| Maximum Sale Day | 7 |
| Rubberized | No |
| Color | Green |
| 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 can Rust Mort™ be applied to?
Rust Mort™ is compatible with bare metal, concrete, plastic, and primer-coated surfaces.
What personal protective equipment is required when using Rust Mort™?
Wear eye protection, chemical-resistant gloves, protective clothing, and a respirator as indicated on the SDS.
What are the primary hazards associated with Rust Mort™?
The product is classified for acute toxicity, aquatic toxicity, eye damage, reproductive hazards, and skin corrosion (GHS H314, H318).
How should a spill of Rust Mort™ on concrete be handled?
Neutralize the spillage according to the product's cleanup instructions before disposal.
Documents & Safety
Danger - This acidic compound can cause severe skin burns, serious eye injury, respiratory irritation, and is toxic if swallowed or inhaled. It also poses a risk to aquatic life. Wear chemical-resistant gloves, safety goggles or face shield, protective clothing (long sleeves, apron), and use a respirator approved for acid vapors. If inhaled, move the person to fresh air; for skin contact, wash thoroughly with soap and water; for eye exposure, rinse continuously for several minutes and seek medical help; if swallowed, rinse mouth and do not induce vomiting. 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 support@autofxmart.com.
How to apply
Steps
1Clean and degrease the surface, then scuff as needed.
2Mask off surrounding panels and trim.
3Mix to the product's ratio and strain.
4Apply 2–3 even coats, flashing between each.
5Let cure fully before sanding, buffing, or assembly.
Specifications
Full data
Frequently asked
Good to know
SEM is compatible with Body Filler. Always ensure the surface is properly cleaned, degreased, and sanded before application to achieve the strongest adhesion and a professional finish.
Most in-stock orders for SEM ship the same or next business day from our US warehouse. Expedited options are available at checkout. Freight-class items may require an additional 1–2 days for carrier pickup.
Yes. autofxmart is an authorized distributor of SEM products. Every unit is factory-fresh, sealed, and backed by the manufacturer's standard warranty. If you have a concern, contact support@autofxmart.com and we will make it right.
The MPN for SEM is 69508. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
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