Works on a Wide Variety of Similar and Dissimilar Substrates
3M™ 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
3M™ 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 95848 Dynabrade Gear Oil
3M 21543, Scotch-Brite Roloc Clean and Strip XT Pro Extra Cut Disc, TR, 2 in x NH, A XCS, 7100179815, 60/box
3M 55585, Hookit Paper Disc 236U, P240 C-weight, 5 in x NH, Die 500X, 7100010687
Dynabrade 64404 36" W x 60" L (914 mm W x 1,524 mm L) Metal Capture Downdraft Table, 230 V (AC), Side Exhaust
3M 55581, Hookit Paper Disc 236U, P120 C-weight, 5 in x NH, Die 500X, 7100010692
3M 55583, Hookit Paper Disc 236U, P220 C-weight, 5 in x NH, Die 500X, 7100010688
3M 20930, PSA Cloth Disc 348D, P120 X-weight, 1 in x NH, Die 100N, 7000118916
Norton 66261199696 - 3" X 1/4" X 1/4" Vortex Rapid Blend Unified Wheel, 7AM U2305, 40 Each
3M 25575, Hookit Paper Disc 210U, P320 A-weight, 5 in x NH, D/F 5HL, Die 500FH, 7010518265
3M 27610, Trizact Finesse-it Film Disc Roll 464LA, A3, 1-1/4 in x NH, Die 125C, 7000148156, 500 discs per roll
3M 20942, Scotch-Weld Urethane Adhesive 3549, Brown, Part A, 5 Gallon Drum, (Pail), 7100041738
Dynabrade 52725 1 hp Straight-Line Extension Polisher, 1 HP, 4,500 RPM, 1/2"-20 Spindle Thread
Dynabrade 94112 7" Dynacut Diamond Segmented Rim Cut-Off Blade
Dynabrade 40610 Electric Dynafile II Abrasive Belt Tool
3M 16091, PPS Mix Ratio Inserts, Large (28 fl oz), 7000028411
3M 08858 Scotch-Brite Surface Conditioning Belt, 1/2 in x 18 in, A CRS, 7000028455
3M™ 72013, Adapter 529-04-50, 110-120 VAC, 7000131705, 1 EA/Case
Dynabrade 11477 Dynabelter Abrasive Belt Tool, Heavy-Duty
Dynabrade 93093 3" Dia. x 50 Grit Premium Ceramic Non-Vacuum DynaCut, Locking-Type Disc, 3 Ply Cloth, 25/pack 
