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.

3M 32306, 641WY, 3" X 30", 600 Mesh, Diamond Cloth Belts, 7010534829
3M 16582, Accuspray Atomizing Head, Blue, 1.2 mm, 7010363219
Dynabrade 51629 .1 hp Straight-Line Pencil Grinder, Central Vacuum, 1/8" Collet
3M 16579, Accuspray ONE Replacement Spray Gun, 7100096183
3M™ 72016, Remote Alarm & Strobe 529-05-20, Audible, 7000131708, 1 EA/Case
3M 26710, PPS Series 2.0 Spray Cup System UV Kit, Standard (22 fl oz,
650 mL), 200 Micron Filter, 7100128902
Norton 66623335427, 2" Dia Vortex Rapid Prep Quick-Change Non-Woven Abrasive Disc, Medium Grade, 50 Each
3M 14753, Scotch-Brite EXL Unitized Wheel, XL-UW, 8A Medium, 3 in x 1/4 in x 3/8 in, 7000000700
3M 35830, Hookit Dust Extraction Flexible Radius Sanding Block, 133 mm x 66 mm, 7100256625
3M™ 72010, Replacement Filter Kit 523-01-29, 7000056891, 1 EA/Case
3M 01335, PSA Cloth Disc 348D, 40 X-weight, 3 in x NH, Die 300V, 7000118878
Insize 7332, SPINDLE LIFT KNOB, 6928640312649
3M™ 17379, Versaflo™ Length Adjusting Breathing Tube BT-30, 7100009685, 1 EA/Case
3M 22392, Roloc Disc 361F, 24 YF-weight, TR, 3 in, Die R300V, 7000045090
3M 71361, 641WY 1/4" X 24", 1200 Mesh Diamond Cloth Belt, 7010534916
3M 05208, Hookit Sanding Block D/F, 70MM x 198MM, 7000028311
Dynabrade 90875 2" Dia. Super Fine NWN DynaBrite Locking-Type Disc, 25/pack
3M™ 53797, Flexible Diamond Belt 6451J, 1/2" Dia x 18" L, M125 Micron, Type G, Pattern B2, 7010509272
Norton 66261014793 - 3" Medium Grade Aluminum Oxide Bear-Tex Speed-Lok High Strength Maroon TR Non-Woven Abrasive Disc, 80 Each
3M 17098, Hood Assembly with Sealed Seams Inner Shroud and Premium Head Suspension S-857, 7000002350, 1 EA/Case
Dynabrade 91163 3/8" W x 13" L 80 Grit A/O DynaCut Belt, 50/pack
3M 08027, Marine Grade Silicone Sealant, White, 304 mL Cartridge, 7000120476, 12/Case
3M Scotchkote Liquid Epoxy Coating Spray System HSS Mix Nozzle, RightAngle, 7000058900
Dynabrade 40610 Electric Dynafile II Abrasive Belt Tool
3M 06586, Marine, Adhesive, Sealant, 4000, UV, White, 400, mL, milliliter, Sausage, Pack, 7000121532, 12/ case
3M 41531, Scotch-Weld Epoxy Adhesive 420, Black, Part B, 5 Gallon Drum (Pail), 7000000827
3M 77558, Cubitron II Hookit Cloth Disc 947A, 77558, 40+ to 120+, 6 in x NH, Die 600Z, 7100232737
3M 25138, Scotch-Weld Threadlocker TL43, Blue, 10 mL Bottle, 7100039219, 10/case
ACS Diamond Cloth Belt, CX1250 1" X 49" 125U
3M 20105, Scotch-Weld Epoxy Adhesive 1751, Gray, Part B/A, 1 Gallon Kit, 7000046339, 2/case
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832
3M 06840, Booth Coating, 5 gal, 7000120531
3M 35790, 675L, 1" X 120", 74u, Diamond Microfinishing Film Belts, 7010509196
Norton 66261014936 3" DIA X 1/8" Thick, Bear-Tex NEX Rapid Blend Quick-Change Type III Non-Woven Unified Wheel, 40 Each
Dynabrade 51630 .1 hp Straight-Line Extension Pencil Grinder, Central Vacuum, 1/8" Collet
3M 05612, Polyurethane Glass Adhesive Sealant 590, Black, 600 mL Sausage Pack, 7000121536, 12/Case 
