Longer Open Time for Positioning Parts
Designed for more complex applications requiring time for complex alignment, 3M™ Polyurethane Adhesive Sealant 551 provides excellent adhesion to concrete, wood, aluminum, most lacquered metals, polyester, glass, and stone. Our versatile formula is good for both above and below the waterline in marine applications and bonding aluminum, FRP, metal, plastic, SMC, steel and wood.
Recommended Applications
- Cosmetic skinning on boats, buses, trailers
- Bonding high-performance applications, such as marine windshields
- Waterproofing joints without primers in concrete, glass, marble, granite and brick
- Bonding and waterproofing modular building panels or bathroom units
Paintable after Skin Forms for Improved Appearance
3M Polyurethane Adhesive Sealant 551 offers an alternative to mechanical fasteners and can replace rivets in some applications. It will bond dissimilar substrates and a wide selection of materials. This adhesive will perform in temperatures ranging from -40?F/-40?C to 194?F/90?C. Once skin forms (60-90 minutes), the sealant can be painted to improve the final finish.
Understanding Polyurethane Sealants
Polyurethane sealants provide strong, flexible durable elastomeric bonds that seal against the elements. These sealants excel in challenging industrial, transportation and construction applications. Polyurethane sealants are available in a wide variety of Shore A hardness, open time and colors to meet many application needs. Choose a 3M Manual or Pneumatic Applicator for dispensing 3M adhesives sealant cartridges and 400ml/600ml sausage packs.
Bringing Better Ideas to the Surface through Science and Innovation
In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.

Dynabrade 52474 Vane Set (4pk)
Dynabrade 95544 Gear Grease, 2.5oz. Tube
Norton 66261013403 - 3" X 1/2" Extra Coarse Grade Silicon Carbide Bear-Tex Rapid Strip TR Stripping Disc, 10 Each
Dynabrade 15420 Dynafile III Abrasive Belt Tool
Norton 66623335427, 2" Dia Vortex Rapid Prep Quick-Change Non-Woven Abrasive Disc, Medium Grade, 50 Each
3M 11419, Roloc Disc 361F, P240 XF-weight, TR, 2 in, Die R200P, 7000045105
Dynabrade 01480 Vane Set (4pk)
Norton 66261014793 - 3" Medium Grade Aluminum Oxide Bear-Tex Speed-Lok High Strength Maroon TR Non-Woven Abrasive Disc, 80 Each
3M Scotchkote Liquid Epoxy Coating Spray System HSS Mix Nozzle,Straight, 7000031879
Dynabrade 11004 Dynafile Screw-In Housing
3M 62605, Scotch-Weld Threadlocker TL42, Blue, 10 mL Bottle, 7100039190, 10/case
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
3M 11137, Roloc Disc 361F, 50 YF-weight, TR, 1-1/2 in, Die R150S, 7000045094
3M 62612, Scotch-Weld Threadlocker TL71, Red, 10 mL Bottle, 7100039197, 10/case
Dynabrade 14230 Rubber Drive Wheel
3M 62816, Adhesive Sealant 760 UV, White, 600 mL Sausage Pack, 7000046609, 12/Case 
