Duramix Heavy Bodied Seam Sealer — Gray (7 oz.)
A high viscosity direct to metal seam sealer designed for sealing horizontal and vertical voids, joints and seams.
The DURAMIX BY SEYMOUR 1390 Heavy Bodied Seam Sealer is a professional-grade, two-component polyurethane seam sealer designed for permanent sealing of joints, seams, and panel connections in collision repair applications. This gray-colored sealer provides excellent adhesion and durability for critical areas requiring long-term moisture and environmental protection.
Features a convenient 1:1 mix ratio for easy preparation with a 10-15 minute work time, allowing sufficient application window for complex repairs. The sealer reaches handling strength in 30-45 minutes and achieves full cure in 6-8 hours. Compatible with multiple substrates including aluminum, bare metal, e-coat, fiberglass, FRP, OEM finishes, primer, and SMC, making it versatile for various repair scenarios. The heavy-bodied consistency provides excellent gap-filling properties and maintains position during cure without sagging.
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, grease, and contaminants. Ensure surface is dry before application.
- Mix components at 1:1 ratio thoroughly until uniform color is achieved. Use mixed material within 10-15 minutes work time.
- Apply sealer to seam areas using appropriate dispensing equipment, ensuring complete coverage and proper adhesion to substrate.
- Allow 30-45 minutes handling time before moving parts or continuing with additional processes.
- Allow 6-8 hours for complete cure before sanding, priming, or topcoating.
Specifications
| Part No. | 1390 |
|---|---|
| Product Line | DMX |
| Manufacturer | DURAMIX BY SEYMOUR |
| UPC | 043281010795 |
- 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 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 sealer requires 6-8 hours for complete cure after application.
What's the working time after mixing?
You have 10-15 minutes of work time once the 1:1 mix ratio components are combined.
When can I handle the sealed area?
The sealer can be handled after 30-45 minutes, though full cure takes 6-8 hours.
Documents & Safety
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