Duramix By Seymour
Duramix By Seymour Rigid Plastic Repair Material (7 oz.)
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Overview
Built for the booth.
Bonding, repairing or surfacing SMC, TPO, rigid plastic bumpers, fiberglass, steel, aluminum and other rigid/semi-rigid type materials.
DURAMIX 1440 Rigid Plastic Repair Material is a two-component structural adhesive designed for permanent repairs on rigid plastic substrates and composite materials. This 7 oz. kit provides fast-setting repair capability for damaged bumpers, body panels, and structural components across multiple substrate types including aluminum, fiberglass, SMC, and various plastics.
The 1:1 mix ratio ensures consistent application while delivering rapid work progression with 5-10 minutes of working time and sandable results in just 10-20 minutes. Full cure is achieved in 6-8 hours, allowing same-day completion of repair cycles. The material bonds effectively to aluminum, steel, fiberglass, FRP, polyester, and primed surfaces, making it versatile for mixed-substrate repairs. As a zero-VOC formulation, it meets environmental compliance requirements while maintaining professional-grade adhesion strength.
Why Pros Choose Duramix By Seymour DMX
- Working Time: 5 to 10 min.
- Handling Time: 10 to 15 min
- Sandable Time: 10 to 20 min.
- Paintable Time: 10 to 20 min.
- Full Cure Time: 6 to 8 hours
Application Guide
- Clean substrate surface thoroughly to remove all contaminants, dirt, and loose material
- Mix equal parts (1:1 ratio) of repair material and activator thoroughly for uniform consistency
- Apply mixed material to damaged area within 5-10 minute work time using appropriate spreading tool
- Allow material to reach handling strength in 10-15 minutes before additional work
- Sand material smooth after 10-20 minutes when fully sandable
- Apply primer and paint after 10-20 minutes when material is paintable
- Allow full cure for 6-8 hours before final finishing operations
Compatibility
Compatible substrates: Steel, Aluminum, Fiberglass, Plastic, SMC.
Specifications
| Part No. | 1440 |
|---|---|
| Product Line | DMX |
| Manufacturer | DURAMIX BY SEYMOUR |
| UPC | 043281010832 |
- Mix Ratio
- 1:1
- Work Time
- 5-10 minutes
- Handling Time
- 10-15 minutes
- Sandable Time
- 10-20 minutes
- Paintable Time
- 10-20 minutes
- Cure Time
- 6-8 hours
- VOC Content
- No VOC
- Compatible Substrates
- Aluminum, fiberglass, FRP, plastic, polyester, primer, SMC, steel
About Duramix By Seymour
Duramix By Seymour is a trusted manufacturer of professional auto body and refinish products used by collision repair shops and restoration specialists across North America.
Frequently Asked Questions
What surfaces can I use this rigid plastic repair material on?
This repair material is compatible with aluminum, fiberglass, FRP, plastic, polyester, primer, SMC, and steel substrates.
How long does it take to fully cure?
Full cure time is 6-8 hours. However, the material becomes sandable in 10-20 minutes and paintable in 10-20 minutes.
What's the working time once I mix this product?
You have 5-10 minutes of working time after mixing at the 1:1 ratio. The handling time is 10-15 minutes.
Can I sand and paint over this repair material?
Yes, the material becomes sandable in 10-20 minutes and is paintable in 10-20 minutes after application.
Documents & Safety
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.
Cure & dry schedule
Timing at 77°F
Work Time
5-10 Minutes
Handling
10-15 Minutes
Sandable
10-20 Minutes
Paintable
10-20 Minutes
Full Cure
6-8 Hours
How to apply
Steps
1Clean both surfaces to bare, dry substrate.
2Load the cartridge and fit the mixing nozzle.
3Apply an even bead (or clamp) where needed.
4Tool or smooth the joint before it skins over.
5Allow to cure fully before stressing or painting.
Specifications
Full data
Frequently asked
Good to know
DURAMIX BY SEYMOUR DMX is compatible with Steel, Aluminum, Fiberglass, Plastic, SMC. 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 DURAMIX BY SEYMOUR DMX 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 DURAMIX BY SEYMOUR 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 DURAMIX BY SEYMOUR DMX is 1440. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
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