Works on a Wide Variety of Similar and Dissimilar Substrates
3Mâ„¢ Polyurethane Adhesive Sealant 550 Fast Cure is part of our 500 Series one-component, moisture-curing, urethane adhesives. These adhesives create a permanently elastic bond and bond strongly a variety of substrates such as wood, fiber reinforced plastic (FRP) and many other plastics to themselves, to metal and to glass. Our moisture-curing formula cures by reacting with moisture in the air or the substrate. In addition to spraying, they can also be extruded from hand held or bench mounted applicators and are primarily dispensed with bulk application equipment_. Our one-part polyurethane adhesives work well for bonding a wide variety of plastics including polystyrene and polyacrylic. They are also effective on a wide variety of other substrates – from aluminum and glass to plastic and wood.
Recommended Applications
- Marine deck to hull bonding
- Vertical and horizontal expansion joint applications
- Concrete and masonry control joints
- Aluminum curtain wall and storefronts
- Door and window frame perimeters
Paintable after Skin Forms for Improved Appearance
3Mâ„¢ Polyurethane Adhesive Sealant 550 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 60051 .1 hp Straight-Line Quick-Change Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet
3M 62714, Scotch-Weld Stainless Steel High Temperature Pipe Sealant PS67, White, 50 mL Tube, 7100039216, 10/case
3M 06506, Scotch Steel Gray Masking Paper, 06506, 6 in x 1000 ft, 6 per case, 7000045440
Standard Abrasives 42631, A/O Flap Wheel 622108, 1-1/2 in x 1/2 in x 1/4-20 in 120, 7010369109, 10 per case
3M 20897, PSA Cloth Disc 348D, 80 X-weight, 4 in x NH, Die 400BB, 7010294664
Dynabrade 15420 Dynafile III Abrasive Belt Tool
3M 64324, Foil Tape 3340, Silver, 72 mm x 45.7 m, 3.9 mil, 7010335734
ACS Type 1, 4-1/2" X .250" X 5/8-11 Type 1 (Flat) 30 Grit, (*Eco-Dust/Debris Reduction)
ACS Diamond Cloth Belt, CX1250 1/2" X 18" 125U
Insize 1535-100WL, DIGITAL OUTSIDE GROOVE CALIPER, 0-4"/0-100mm, built-in wireless, 6940561961102
Dynabrade 55500 .1hp Pencil Grinder, Twin Turbine, 100,000 RPM, Nickel-Plated Aluminum Housing, 1/8" Collet
3M 86431, Scotch-Weld Multi-Material Composite Urethane Adhesive DP6330NS,Green, 48.5 mL Duo-Pak, 7100109828, 12/Case
Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty
Dynabrade 51301 .5 hp Straight-Line Die Grinder
3M 10119, Synthetic Steel Wool Pad 10119NA, 0000 Super Fine, 7000126181
3M 64660, Scotch-Brite Durable Flex Hand Pad, MX-HP, SiC Ultra Fine, 4-1/2 in x 9 in, 7100042335, 25/Carton
3M 36518, Green Corps Abrasive File Belt, 80 Grit, 1/2 in x 18 in (12.7 mm x 457.2 mm), 7100226321, 20 Belts Per Carton, 5 Cartons Per Case
Dynabrade 90873 2" Dia. Medium NWN DynaBrite Locking-Type Disc, 25/pack
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
3M 08364, Urethane Seam Sealer, Beige, 310 mL Foil Pack, 7100049259, 6 per case 
