Description 3M MSP Seam Sealer is a high quality, heavy-bodied, general purpose, moisture-curing seam sealers that is designed for interior and exterior body joints. Adheres well to primed surfaces except acrylic lacquer. The 3M MSP Seam Sealer 08370 adheres well to primed surfaces except acrylic lacquer. This is a high quality, heavy-bodied, general purpose, moisture-curing seam sealer designed for interior and exterior body joints. The 3M MSP Seam Sealer 08370 is tack free in 30 minutes and immediately paintable up to 72 hours. Use with 3M Flexible Package Applicator Gun, 08398.
