The SEM Dual-Mix™ Gray Seam Sealer (39377) is a professional-grade, two-component epoxy seam sealer engineered for durable, factory-style seam sealing in automotive body repair and restoration.
Its advanced dual-mix formulation provides excellent adhesion, flexibility, and resistance to vibration, making it suitable for both interior and exterior applications. The gray color closely matches many OEM factory seam finishes, making it ideal for collision repairs and restorations where appearance matters.
Paintable immediately with most solvent-based coatings, this seam sealer helps reduce cycle time while delivering consistent, long-lasting results trusted by professional body shops.
Key Features
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Dual-mix epoxy seam sealer
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OEM-recommended performance
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Suitable for interior & exterior seams
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Direct-to-metal capable
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Paintable immediately
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Durable, flexible finish
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Gray color for OEM-style appearance
Working & Cure Times
| Stage | Time |
|---|---|
| Working Time | ~10 minutes |
| Set Time | ~15 minutes |
| Topcoat Time | Immediate |
What’s Included
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1 × SEM Dual-Mix™ Gray Seam Sealer Cartridge (7 oz)
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Static mixing nozzle included
Ideal For
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Factory-style seam sealing
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Collision repair
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Automotive restoration
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Floor pans, trunks, firewalls
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Professional & advanced DIY use
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