A Strong Adhesion Seam Sealer
3M™ MSP Seam Sealer adheres exceptionally well to bare metal, primed and painted surfaces. Our high quality, heavy-bodied and moisture-curing seam sealer may be used on both interior and exterior body joints. It dries to be tack free in 30 minutes and is immediately paintable up to 72 hours without abrading. Our seam sealer offers the convenience of being a one-part formula that does not shrink and stays permanently flexible. This seam sealer is not recommended for acrylic lacquer surfaces.
Better Results for Professional Auto Body Shops
When your reputation as an automotive body shop that does quality work is on the line, you want to use a seam sealer that is proven for reliability. Excellent adhesion to primed metal and aluminum means there is minimal opportunity for bond failure and fewer customer returns for seam sealer failure. With its fast curing properties, our seam sealer boosts auto shop productivity.
A User-Friendly Product for Automotive Technicians
Our seam sealer has been formulated so that it is more pleasant and easier to use. Its low solvent percentage means there is less airborne solvent during curing process and less odor. This seam sealer has an excellent shelf life and generally stays usable longer than standard seam sealers, resulting in less product waste.
Recommended Applicator Gun
We recommend applying 3M™ MSP Seam Sealer with our 3M™ Flexible Package Applicator Gun, 08398 (sold separately). This fully enclosed, all metal, rod driven, friction feed applicator gun smoothly and effortlessly dispenses single component products packaged in 310 mL and smaller flex packs.

Dynabrade 40320 Dynafile II Abrasive Belt Tool
Dynabrade 79808 DynaBolt AO 4" x .035" x 3/8" T1 Cut-off Wheel, Box of 10 Discs
Dynabrade 92116 1/2" W x 12" L 320 Grit A/O DynaCut Belt, 50/pack
Dynabrade 54947 Spring, Throttle Ball
Dynabrade 01480 Vane Set (4pk)
Dynabrade 79061 1/2" W x 24" L 60 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 91316 11-1/4" Dia. x 60 Grit A/O Non-Vacuum Hook-Face DynaCut Disc, 10/Box
Dynabrade 92102 3" W x 10-11/16" L 80 Grit A/Z DynaCut Belt, 10/pack
Dynabrade 90499 1/2" W x 34" L 120 Grit A/O DynaCut Belt, 50/pack
Dynabrade 95674 1/4" Female Coupler
Dynabrade 79058 1/4" W x 24" L 80 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 90411 1/8" W x 24" L 220 Grit A/O DynaCut Belt, 50/pack
Dynabrade 15101 Tension Arm (for Mini Dynafile II)
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
Dynabrade 57113 Rotor/Vane Set
Dynabrade 90367 3/4" W x 34" L 60 Grit A/O DynaCut Belt, 50/pack
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
Dynabrade 61123 High Efficiency Collection Filter Bag (15-22 Gallon)
Dynabrade 56826 6" Dia. Non-Vacuum Dynorbital Supreme Random Orbital Sander, 3/16" Orbit
Dynabrade 90924 3" Dia. x 40 Grit A/Z DynaCut Locking-Type (TR), Flap Disc, 10/pack 
