3M 08360 - Urethane Seam Sealer (White, 310mL)

3M 08360 Urethane Seam Sealer (White, 310 mL) is a professional-grade moisture-curing urethane seam sealer designed for automotive collision repair and restoration applications. This one-component urethane formula provides durable adhesion and flexible sealing performance, helping protect panel joints from moisture intrusion and corrosion.

Designed for use on properly prepared and primed surfaces, the sealer maintains flexibility after curing to accommodate panel movement and vibration. The 310 mL cartridge fits standard caulking-style applicator guns, making it ideal for door seams, floor pans, trunk areas, quarter panels, and structural body joints in automotive refinishing workflows.

Key Features

• 310 mL Cartridge: Compatible with standard caulking-style applicator guns
• Moisture-Curing Urethane Formula: Provides durable, flexible sealing performance
• White Color: Suitable for applications requiring white seam appearance
• Corrosion Protection: Helps seal panel joints against moisture intrusion
• Flexible After Cure: Accommodates panel movement and vibration
• Professional Grade: Trusted in automotive collision repair and body shop environments