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.

ACS Diamond Cloth Belt, CX1250 3" X 90" 20U
3M 48236, General Purpose Glass Cloth Tape 3615, White, 2 in x 36 yd, 7 mil, 3615, 7000123894
3M 11419, Roloc Disc 361F, P240 XF-weight, TR, 2 in, Die R200P, 7000045105
3M 00705, Interam Stainless Steel Foil Tape T-65, 4 in x 100 ft, 7100024280
Standard Abrasives 710190, Cartridge Roll Mandrel, 2560020, 1/8 in x 1 in x 1/4 in x 1-1/4 in x 2-3/4 in CM-9, 7000121790
3M Super Abrasives Roloc Disc, 2" Type-R, Medium AO High Strength, Box of 50
Norton 66261014792 - 2" Medium Grade Aluminum Oxide Bear-Tex Speed-Lok High Strength Maroon TR Non-Woven Abrasive Disc 160 Each
ACS CX1250 Diamond Belt, 1/2" X 24" 125u
3M 45713, Cubitron II Hookit Cloth Disc 947A, 80+ X-weight, 3 in x NH, D/F 3HL, Die 300BE, 7100113145
3M 93623, Steel Mesh Viso V4G-10P 10 ea/Case, 7000103815
3M 26312, PPS Series 2.0 Spray Cup System Kit, Midi (13.5 oz, 400 mL),
125 Micron Filter, 7100169346
3M 20910, PSA Cloth Disc 348D, 60 X-weight, 2 in x NH, Die 200P, 7000118872
Dynabrade 92585 3-1/2" Dia. x Medium Hook-Face Surface Conditioning DynaBrite Disc, 10/pack
Dynabrade 94980 1/4" Composite-Style Coupler, 1/4" Male
3M 22407, Roloc Disc 361F, 80 YF-weight, TR, 1-1/2 in, Die R150S, 7000045099
3M 26022, PPS Series 2.0 Adapter, Type S12, 10 mm Male, 1.0 mm Thread, 7100135943
3M 62714, Scotch-Weld Stainless Steel High Temperature Pipe Sealant PS67, White, 50 mL Tube, 7100039216, 10/case
3M 20903, PSA Cloth Disc 348D, P240 X-weight, 2 in x NH, Die 200P, 7000118877
3M 15913, Scotch-Brite Roloc Disc High Strength, TR, 2 in X NH A Medium, 7000000710
3M 10120, Synthetic Steel Wool Pads, 10120NA, #000 Extra Fine, 7000126149
3M 23354, Home Dust Mask, 8661P4-DC, 7100159312, 4 Each/Pack
Norton 66623335427, 2" Dia Vortex Rapid Prep Quick-Change Non-Woven Abrasive Disc, Medium Grade, 50 Each
3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894
3M 33349, 641WY 1/4" X 24", 220 Mesh Diamond Cloth Belt, 7010534919
Dynabrade 11476 Dynabelter Abrasive Belt Tool, Heavy-Duty
3Mâ„¢ 72010, Replacement Filter Kit 523-01-29, 7000056891, 1 EA/Case
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
3M 11137, Roloc Disc 361F, 50 YF-weight, TR, 1-1/2 in, Die R150S, 7000045094
3M 08973, Scotch-Weld Epoxy Potting Compound DP270, Clear, 48.5 mL Duo-Pak, 7100148730, 12/case
3M Scotchkote Liquid Epoxy Coating Spray System HSS Mix Nozzle, RightAngle, 7000058900
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
3M 45203, Stikit Sanding Block, 2-1/2 in, 7000028350
3M 28126, Hookit Clean Sanding Disc 900DZ, 5 in 80 J-weight, Die 500LG, 7010290258
Dynabrade 56826 6" Dia. Non-Vacuum Dynorbital Supreme Random Orbital Sander, 3/16" Orbit
3M 01328, PSA Cloth Disc 348D, P180 X-weight, 3 in x NH, Die 300V, 7000045068
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
3M 97421, Aluminum Foil Tape 3380, Silver, 72 mm x 45 m, 3.25 mil, 7010375681
3M 01032, Scotch-Brite Clean and Strip Unitized Wheel, CS-UW, 7S Extra Coarse, 6 in x 1 in x 5/8 in, 7000120867
3M 49941, Roloc Disc 361F, 80 YF-weight, TSM, 3 in, Die RS300VM, 7000148151
3M 01326, PSA Cloth Disc 348D, P240 X-weight, 3 in x NH, Die 300V, 7000045069
Dynabrade 14360 Pneumatic Pipe Belt Finisher
3M 50730, PPS UV Standard Lid & Liner Kit, Standard (22 fl oz, 650
mL), 125 Micron Filters, 7100067511
3M 07958, Sanding Screen, 80 Grit, 7-7/8 in x 3/16 in, 7100160277
3M 76790, Roloc Disc 361F, 60 YF-weight, TS, 2 in, Die RS200P, 7010300088
3M 62661, Scotch-Weld General Purpose Retaining Compound RT09, Green, 10 mL Bottle, 7100039228, 10/case
Norton 66261014897 2" x 1/4" Bear-Tex NEX Rapid Blend AO Medium Grit TR (Type III) Non-Woven Wheel, 60 Each
Dynabrade 96623 Raptor Vac Disposable Dust Collection Bags, 5/pack
3M 45699, Cubitron II Hookit Cloth Disc 947A, 40+ X-weight, 3 in x NH, Die 300V, 7100113114
3M 98242, Marine Adhesive Sealant 3000 UV, Black, 290 mL Cartridge, 7100111111, 12/Case 
