Duramix Heavy Bodied Seam Sealer — White (7 oz.)
A high viscosity direct to metal seam sealer designed for sealing horizontal and vertical voids, joints and seams.
DURAMIX BY SEYMOUR 1380 Heavy Bodied Seam Sealer is a professional-grade, two-component urethane sealer designed for automotive seam sealing applications. This white-colored sealer provides excellent adhesion and flexibility for restoring factory seam integrity on collision repairs, panel replacements, and bodywork restoration projects.
The 1:1 mix ratio ensures consistent application and eliminates mixing errors, while the 10-15 minute work time allows sufficient open time for proper tooling and finishing. With a handling time of 30-45 minutes and full cure in 6-8 hours, this sealer accommodates efficient workflow scheduling. The formula adheres to multiple substrates including aluminum, bare metal, e-coat, fiberglass, FRP, OEM finishes, primer, and SMC, making it suitable for diverse repair scenarios across different vehicle types and materials.
Why Pros Choose DURAMIX BY SEYMOUR DMX
- Working Time: 10 to 15 min.
- Handling Time: 30 to 45 min
- Sandable Time: 45 min
- Paintable Time: Immediately
- Full Cure Time: 6 to 8 hours
Application Guide
- Clean substrate thoroughly to remove dirt, oil, and loose debris. Ensure surface is dry before application.
- Mix sealer at 1:1 ratio. Use mixed product within 10-15 minutes work time.
- Apply sealer to seam areas using appropriate dispensing tool. Work quickly to complete application before work time expires.
- Allow 30-45 minutes handling time before moving parts or applying additional materials.
- Allow 6-8 hours full cure time before sanding or topcoating.
Specifications
| Part No. | 1380 |
|---|---|
| Product Line | DMX |
| Manufacturer | DURAMIX BY SEYMOUR |
| UPC | 043281010788 |
- Mix Ratio
- 1:1
- Work Time
- 10-15 minutes
- Handling Time
- 30-45 minutes
- Cure Time
- 6-8 hours
- Compatible Substrates
- Aluminum, bare metal, e-coat, fiberglass, FRP, OEM primer, SMC
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 seam sealer on?
This seam sealer is compatible with aluminum, bare metal, e-coat, fiberglass, FRP, OEM finishes, primer, and SMC substrates.
How long does it take to fully cure?
The seam sealer cures completely in 6-8 hours under normal conditions.
What's the working time after mixing?
You have 10-15 minutes of work time after mixing the 1:1 ratio components before the material becomes difficult to apply.
When can I handle the sealed area?
The seam sealer reaches handling strength in 30-45 minutes, allowing for careful movement or positioning of parts.
What's the mix ratio for this product?
Mix equal parts base and activator at a 1:1 ratio by volume for proper cure and performance.
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