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.

3M™ 53797, Flexible Diamond Belt 6451J, 1/2" Dia x 18" L, M125 Micron, Type G, Pattern B2, 7010509272
Standard Abrasives 840038, Quick Change Surface Conditioning GP Disc, A/O Medium, TSM, Maroon, 3/4 in, QS75KM, 7000121647, 50/case
3M 06742, Overspray Protective Sheeting, 20 ft x 250 ft, 7000120043
Norton 66261096557 - 3" X 1/2" Blaze Rapid Strip Ceramic Alumina Extra Coarse Grade Non- Woven Abrasive Disc With Quick Change TR III Attachment, 25 Each
3M 16614, Accuspray Atomizing Head, Green, 1.3 mm, 7100086806 (4 Nozzles/Kit)
Dynabrade 51301 .5 hp Straight-Line Die Grinder
3M 22394, Roloc Disc 361F, 50 YF-weight, TR, 3 in, Die R300V, 7000045096
3M 51034, Roloc Disc 361F, P100 YF-weight, TSM, 2 in, Die RS200PM, 7000119020
3M 08858 Scotch-Brite Surface Conditioning Belt, 1/2 in x 18 in, A CRS, 7000028455
3M 08362, Urethane Seam Sealer, Gray, 310 mL Cartridge, 7100066294, 12 per Case 
