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.

Standard Abrasives 717078, Cartridge Roll Mandrel, 3/32 in x 3/4 in x 1/4 in x 1 in x 2-3/4 in CM-2E, 7000121813
Dynabrade 95724 Sanding Creme 1qt
Dynabrade 78687 D5 Cartridge Roll Mandrel 1/8" Pilot Dia. x 1" Pilot Length, 1/8" Shank Dia. x 1" Shank Length
Standard Abrasives 850034, Unitized Wheel Steel Screw Mandrel, 7/8 in x 1/4 in Shank, 7000121879
Dynabrade 78232 Polishing Compound (White)
3M 95307, Lead Foil Tape 421, Dark Silver, 3/4 in x 36 yd, 6.3 mil, 7000049079
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832
ACS CX1250 Diamond Belt, 1/2" X 24" 30u
3M™ 07011, Supplied Air Respirator Hose W-9435-50/07011(AAD), 7000005373, 1 EA/Case
3M 77197, Scotch-Brite™ Roloc™ Deburr and Finish PRO Unitized Wheel,TR, 3 in x 1/8 in x NH, 8C CRS+, 7100109130, 40/box
3M 10459, Sanding Screen Sheet 483W, 100, 9 in x 11 in, 7100210978
3M™ 72787, Calibration Kit 529-04-48, Large, 7000052154, 1 EA/Case
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
3M™ 17323, Versaflo™ Respiratory Helmet Assembly M-407, with Premium Visor and Flame Resistant Shroud, 7000002395, 1 EA/Case
3M™ 72122, Portable Compressed Air Filter and Regulator Panel 256-02-01, 100 cfm, 8 outlets, with Carbon Monoxide Monitor, 7000052147, 1 EA/Case
3M 87147, PSA Cloth Disc 777F, 5 x NH, 36 YF-weightt, 7010308524
Standard Abrasives 708751, PSA A/O Disc, 12 in x NH, 60, 7010370081
3M 22392, Roloc Disc 361F, 24 YF-weight, TR, 3 in, Die R300V, 7000045090
3M 20152, Scotch-Weld Epoxy Adhesive 1838, Green, Part B/A , 1 Quart Kit, 7000046340, 6/case
3M 87449 Silver Depressed Center Grinding Wheel, T27 Quick Change, 9 in x 1/4 in x 5/8-11 Center Hub Thread, 7010409732, 20 per case
3M 47195, Polyurethane Construction Sealant 525, Gray, 600 mL Sausage Pack, 7100198003, 12/Case
3M™ 17379, Versaflo™ Length Adjusting Breathing Tube BT-30, 7100009685, 1 EA/Case
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
3M™ 07010, Supplied Air Respirator Hose W-9435-25/07010(AAD), 25 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005374, 1 EA/Case
Standard Abrasives 840031, Quick Change Surface Conditioning FE Disc, A/O Coarse, TSM, Brown, 3/4 in, QS75KM, 7000046845, 50/case
ACS Diamond Cloth Belt, CX1250 1/2" X 18" 125U
3M 62819, Adhesive Sealant 760 UV, Gray, 290 mL Cartridge, 7100097767, 12/Case 
