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 62602, Scotch-Weld Threadlocker TL22, Purple, 50 mL Bottle, 7100039159, 10/case
3M 13185, Scotch-Brite Multi-Finishing Wheel, MU-WL, 2S Coarse, 8 in x 2 in x 3 in, 7000120809
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
Dynabrade 91428 1/2" W x 12" L 60 Grit A/O DynaCut Belt, 50/pack
3M 01328, PSA Cloth Disc 348D, P180 X-weight, 3 in x NH, Die 300V, 7000045068
3M™ 72787, Calibration Kit 529-04-48, Large, 7000052154, 1 EA/Case
3M™ 07011, Supplied Air Respirator Hose W-9435-50/07011(AAD), 7000005373, 1 EA/Case
Insize 7332, SPINDLE LIFT KNOB, 6928640312649
3M 16611, Accuspray Atomizing Head, Clear, 1.8 mm, 7000000500 (4 Nozzles/Kit)
Dynabrade 58445 8" Dia. Two-Hand Gear-Driven Sander, Non-Vacuum, .45 HP, 900 RPM, PSA
3M 11411, Roloc Disc 361F, 50 YF-weight, TR, 1 in, Die R100N, 7000045095
3M 71361, 641WY 1/4" X 24", 1200 Mesh Diamond Cloth Belt, 7010534916
3M 05205, Marine Adhesive Sealant 5200, Black, 3 oz Tube, 7000118402, 6/Case
3M 95412, Lead Foil Tape 420, Dark Silver, 3/4 in x 36 yd, 6.8 mil, 7000029006
3M 22399, Roloc Disc 361F, 50 YF-weight, TR, 2 in, Die R200P, 7000028184
Norton 66261014897 2" x 1/4" Bear-Tex NEX Rapid Blend AO Medium Grit TR (Type III) Non-Woven Wheel, 60 Each
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
Dynabrade 18433 Collet Insert, 1/4"
Dynabrade 40610 Electric Dynafile II Abrasive Belt Tool
3M 65033, Scotch-Brite Diamond Wheel, 645DC 6 in x 1/2 in x 1 in, 7010365574, Box of 3
Dynabrade 97566 1/4" Safety Coupler, Female
Dynabrade 51633 .1 hp Straight-Line Extension Pencil Grinder, Central Vacuum, 1/8" Collet
Dynabrade 78182 3" Dia. Medium DynaBrite Locking-Type Disc, 25/pack
3M™ 72016, Remote Alarm & Strobe 529-05-20, Audible, 7000131708, 1 EA/Case
3M 26128, PPS Series 2.0 Adapter, Type S33, 1/8 Female, 27 Thread NPT, 7100135950
3M 08023, Adhesive Sealant 740 UV, White, 600 mL Sausage Pack, 7000000933, 12/Case 
