Multi Purpose Sealant with Good UV Resistance
3M Polyurethane Sealant 540 is a single component, moisture curing, polyurethane sealant used to bond a wide variety of materials, including plastics, fiberglass reinforced plastic (FRP), sheet molding compound (SMC), aluminum, steel, coated metal and wood. It exhibits high tensile strength, good UV resistance, low Shore A hardness and low modulus to maintain its functionality in a wide range of extreme service environments. Available in cartridge, sausage pack, pail and drum volumes to meet your application needs.
Recommended Applications
- Vertical and horizontal panel bonding and joint sealing
- Aluminum curtain walls and storefronts
- Transportation manufacturing (bus, rail, truck, trailer)
- Replacement of mechanical fasteners in many situations
Paintable after Skin Forms for Improved Appearance
3M Polyurethane Sealant 540 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 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 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
3M 15041, Scotch Electrical Shielding Tape 24, 1 in x 15 ft (25 mm x 4,6 m), 7000031348
Dynabrade 11005 Dynafile Belt Housing Guard
Insize PHT-C751-S, 400 GRADE ABRASIVE PAPER, 6974029779886
3M 01563, Scotch-Brite Cut and Polish Unitized Wheel, CP-UW, 5A Fine, 3 in x 1/4 in x 1/4 in, 7100001111
3M 22394, Roloc Disc 361F, 50 YF-weight, TR, 3 in, Die R300V, 7000045096
3M 26135, PPS Series 2.0 Adapter, Type S40, Trapezoidal Thread, 7100135335
3M 01328, PSA Cloth Disc 348D, P180 X-weight, 3 in x NH, Die 300V, 7000045068
3M 40213, Cloth Spiral Band 341D, 40 X-weight, 1 in x 1 in, 7010308092
Dynabrade 15003 Mini-Dynafile II Abrasive Belt Tool
3M 10115, Synthetic Steel Wool Pads, #3 Coarse, 7000051986
3M 22405, Roloc Disc 361F, P100 YF-weight, TR, 3 in, Die R300V, 7000045102
ACS CX1250 Diamond Belt, 1/2" X 24" 9u
Standard Abrasives 726004, A/O C4 Straight Precision Cartridge Roll, 1 in x 2-1/2 in x 1/4 in 80, 7100098780
Dynabrade 93650 5" Dia. x 3/4" CH 40/50 Grit Side Spoked Diamond Cut-Off Wheel
3M 05205, Marine Adhesive Sealant 5200, Black, 3 oz Tube, 7000118402, 6/Case
3M 22404, Roloc Disc 361F, 80 YF-weight, TR, 3 in, Die R300V, 7000045100
Dynabrade 91069 1" Dia. x 1" W, 80 Grit, Z/A DynaCut Band, 10/pack
Dynabrade 51756 .1 hp Straight-Line Extension Pencil Grinder, Rear Exhaust, 35,000 RPM, 1/8" Collet
3M 66629, Cloth Belt 341D, 40 X-weight, 6 in x 48 in, Film-lok, Single-flex, 7000118863, 20 per case
Dynabrade 60051 .1 hp Straight-Line Quick-Change Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet
3M 62715, Scotch-Weld Stainless Steel High Temperature Pipe Sealant PS67, White, 250 mL Tube, 7100039215, 2/case
3M 08916 Scotch-Brite Surface Conditioning Belt, SC-BS, A/O Medium, 2 in x 60 in, 7010309628
3M 76632, Roloc Disc 777F, 50 YF-weight, TR, 3 in, Die R300V, 7000045628
3M 06524, Scotch Steel Gray Masking Paper, 06524, 24 in x 1000 ft, 1 per case, 7000045442
3M 20886, PSA Cloth Disc 348D, P100 X-weight, 5 in x NH, Die 500X, 7000148148
3M 01326, PSA Cloth Disc 348D, P240 X-weight, 3 in x NH, Die 300V, 7000045069
3M 10119, Synthetic Steel Wool Pad 10119NA, 0000 Super Fine, 7000126181
ACS Diamond Cloth Belt, CX1250 1/4" X 24" 75U
3M 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091
3M 77558, Cubitron II Hookit Cloth Disc 947A, 77558, 40+ to 120+, 6 in x NH, Die 600Z, 7100232737
3M 08360, Urethane Seam Sealer, White, 310 mL Foil Pack, 7000036353, 6 per case 
