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.

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
3M™ 07012, Supplied Air Hose W-9435-100/07012(AAD), 100 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005375, 1 EA/Case
3M 45722, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 6 in x NH, D/F 6HL, Die 600HZ, 7100113871
Dynabrade 79109 1/2" W x 12" L 80 Grit DynaCut Premium Ceramic Belts, 50/pack
Insize 0110-1125, ANEMOMETER, 6974029776595
Standard Abrasives 707195, Aluminum Oxide Handy Roll, P80 J-weight, 2 in x 50 yd, 7100031626
3M 11411, Roloc Disc 361F, 50 YF-weight, TR, 1 in, Die R100N, 7000045095
3M 62611, Scotch-Weld Threadlocker TL62, Red, 250 mL Bottle, 7100039195, 2/case
3M 22392, Roloc Disc 361F, 24 YF-weight, TR, 3 in, Die R300V, 7000045090
3M 45709, Cubitron II Hookit Cloth Disc 947A, 80+ X-weight, 6 in x NH, Die 600Z, 7100113080
Dynabrade 78182 3" Dia. Medium DynaBrite Locking-Type Disc, 25/pack
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
Dynabrade 92186 1" W x 30" L 60 Grit A/Z DynaCut Belt, 50/pack
3M 08025, Adhesive Sealant 740 UV, Black, 600 mL Sausage Pack, 7100057385, 12/Case
3M 16314, PPS Lid & Liner Kit, Mini (6 fl oz), 125 Micron Full
Diameter Filter, 50 Lids & Liners per kit, 7000045487
3M 62610, Scotch-Weld Threadlocker TL62, Red, 50 mL Bottle, 7100039196, 10/case
3M 20910, PSA Cloth Disc 348D, 60 X-weight, 2 in x NH, Die 200P, 7000118872
3M 45701, Cubitron II Hookit Cloth Disc 947A, 80+ X-weight, 3 in x NH, Die 300V, 7100113126
3M 21543, Scotch-Brite Roloc Clean and Strip XT Pro Extra Cut Disc, TR, 2 in x NH, A XCS, 7100179815, 60/box
3M 77559, Cubitron II Hookit Cloth Disc 784F, 77559, 36+ to 120+, 5 in x NH, Die 500X, 7100232738
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
3M 22408, Roloc Disc 361F, P100 YF-weight, TR, 1-1/2 in, Die R150S, 7000045101
3M 95725, Venture Tape Metal Building Facing Tape 1552CW, White, 72 mm x 45.7 m, 7010313505
Dynabrade 79170 1" W x 30" L 60 Grit Ceramic DynaCut Belt, 50/pack
3M 28850, Unitized Wheel Mandrel 28850, 2-1/8 in x 1/4 in x 3/4 in x 3/4 in, 7100082549
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
3M 45713, Cubitron II Hookit Cloth Disc 947A, 80+ X-weight, 3 in x NH, D/F 3HL, Die 300BE, 7100113145
3M™ 72787, Calibration Kit 529-04-48, Large, 7000052154, 1 EA/Case
3M 71361, 641WY 1/4" X 24", 1200 Mesh Diamond Cloth Belt, 7010534916
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
Standard Abrasives 710479, A/O Straight Cartridge Roll, 1/2 in x 1-1/2 in x 1/8 in 80, 7100085870
3M 62818, Adhesive Sealant 760 UV, Black, 600 mL Sausage Pack, 7000121496, 12/Case 
