Create Tight, Long-Lasting Seals
3M™ Urethane Seam Sealer is an excellent choice when sealing interior or exterior seams to help prevent the intrusion of water, dust, and air, aiding in providing corrosion resistance at these locations. Choose this seam sealer for high-quality sealing of seams and joints on primed metal or painted surfaces, and even on bare metal. It applies easily and is formulated for long-lasting support to the seam without shrinking, cracking, or causing unpleasant odors.
Fill in Gaps with Confidence
With its thick consistency, our 3M™ Urethane Seam Sealer is an excellent gap sealer and you can feel confident using this sealer to fill large voids between parts where they occur. Designed to be used over epoxy or urethane based primers, the sealer comes in several colors to enable color matching. Note that the sealer should be top coated when exposed to ultra violet rays.
Excellent Performance in High Heat and Humidity
While some seam sealers require cure time in a completely dry environment, our 3M™ Urethane Seam Sealer is moisture-curing so it provides a reliable seal regardless of moisture or humidity in the air. It can be painted after 30-45 minutes.
Rigid or Flex Pack Options
This sealer comes in either a flexible foil pack or rigid metal cartridge. Application of the cartridge sealer requires the use of a 3M™ Single Component Cartridge Applicator Gun – pneumatic (08990) or 3M™ Professional Caulking Gun (08993), and 3M™ Threaded Cartridge Nozzles (08187). Foil packs are designed for use with 3M™ Flexible Package Applicator Gun – Pneumatic (08399) or 3M™ Flex Pack Applicator (08398) these include one applicator nozzle, additional nozzles may be acquired as PN (08188).
3M Science Meets the Needs of Automotive Professionals
3M™ Urethane Seam Sealer was formulated for general repairs that require long-lasting hold, easy curing, and appearance matching. 3M™ Urethane Seam Sealer is ideal for lasting seam sealing protection on many different surfaces, including bare metal, and allows technicians to expertly recreate OEM appearances. This expert formula represents another way that 3M applies scientific knowledge and ingenuity to the automotive industry.

3M 22404, Roloc Disc 361F, 80 YF-weight, TR, 3 in, Die R300V, 7000045100
Dynabrade 78291 2" Dia. x 2A M Medium Type R Unitized Locking-Type Disc, 25/pack
Dynabrade 78182 3" Dia. Medium DynaBrite Locking-Type Disc, 25/pack
3M 36534, Green Corps Roloc Disc 36534, 40 grit, 3 in, 7100225151, 10 Cartons/Case
Dynabrade 51345 2" (51 mm) Dia. Locking-Type Disc Pad, Medium Density, 3/8"-24 Thread
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
3M 22405, Roloc Disc 361F, P100 YF-weight, TR, 3 in, Die R300V, 7000045102
3M 22409, Roloc Disc 361F, P120 XF-weight, TR, 1-1/2 in, Die R150S, 7000045103
Dynabrade 78423 4-1/2" Dia. x 3/8" Very Fine DynaBrite Surface Conditioning Disc, 25/pack
Standard Abrasives 725005, Buff and Blend Cross Buff HS, A/O Medium, 1-1/2 in x 1/2 in x 3 Ply x 8-32, 7000046826
3M 77558, Cubitron II Hookit Cloth Disc 947A, 77558, 40+ to 120+, 6 in x NH, Die 600Z, 7100232737
Dynabrade 11684 Dynabelter Contact Arm Assembly 4" DIA X 5/8" W., 40 Duro Serrated
3M 24049, Wetordry Cloth Disc 281W, P1000 YF-weight, 8 in x NH, Die 800JM, 7000045052
Dynabrade 64404 36" W x 60" L (914 mm W x 1,524 mm L) Metal Capture Downdraft Table, 230 V (AC), Side Exhaust
Dynabrade 14360 Pneumatic Pipe Belt Finisher
3M 45714, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 3 in x NH, D/F 3HL, Die 300BE, 7100113113
Dynabrade 40610 Electric Dynafile II Abrasive Belt Tool
Dynabrade 11476 Dynabelter Abrasive Belt Tool, Heavy-Duty
Dynabrade 78176 2" Dia. Medium NWN VT DynaBrite TR Locking-Type Disc, 25/pack
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
ACS Diamond Cloth Belt, CX1250 3" X 90" 20U
3M 22392, Roloc Disc 361F, 24 YF-weight, TR, 3 in, Die R300V, 7000045090
Dynabrade 95848 Dynabrade Gear Oil
Norton 66261199696 - 3" X 1/4" X 1/4" Vortex Rapid Blend Unified Wheel, 7AM U2305, 40 Each
Dynabrade 90875 2" Dia. Super Fine NWN DynaBrite Locking-Type Disc, 25/pack
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
3M 62816, Adhesive Sealant 760 UV, White, 600 mL Sausage Pack, 7000046609, 12/Case
Standard Abrasives 32985, Aluminum Oxide Overlap Disc, 714721, 60 Grit, 2 in x 8-32 x 2 Ply, 7100116380
3M 01326, PSA Cloth Disc 348D, P240 X-weight, 3 in x NH, Die 300V, 7000045069
Dynabrade 96101 Dynabrade Air Lube 10W/NR 24 Per Box 
