3M 08369 - MSP Seam Sealer (White, 310mL)

3M 08369 MSP Seam Sealer (White, 310 mL) is a professional-grade moisture-curing seam sealer formulated with Modified Silane Polymer (MSP) technology for automotive collision repair and refinishing applications. This one-component formula provides durable adhesion, flexibility, and long-term sealing performance to help protect panel joints from moisture intrusion and corrosion.

Engineered for use on properly prepared surfaces, MSP technology offers strong bonding performance and paintability once cured. The white color makes it suitable for OEM-style seam replication in applications requiring a light or factory-matched appearance. The 310 mL cartridge fits standard caulking-style applicator guns, making it ideal for door seams, floor pans, trunk areas, and structural body joints in body shop environments.

Key Features

• 310 mL Cartridge: Compatible with standard caulking-style applicator guns
• MSP (Modified Silane Polymer) Technology: Durable, flexible sealing performance
• White Color: Suitable for OEM-style seam applications
• Corrosion Protection: Helps seal joints against moisture intrusion
• Paintable After Cure: Compatible with automotive refinishing processes
• Professional Grade: Trusted in automotive collision repair facilities