Uniquely Versatile
We formulate 3M Hot Melt Adhesive 3748 VO to cure to a strong, flexible bond for shock and vibration resistance that ensures a reliable and lasting bond. Our thermoplastic hot melt, 100% solids adhesive provides good peel adhesion and thermal shock properties, the unequal expansion of different components, along with the heat resistance necessary in electronic and other environments. It offers excellent electrical properties which make it ideal for use on printed wiring board and other electronic bonding applications. It bonds well to challenging surfaces such as polyolefins and other plastics. In addition, this versatile and unique formula is non-corrosive to copper and other metals.
Recommended Applications
- Heavy duty electrical cords and connectors
- Electronics in plastic cases
- Circuit boards
- Woodworking
- Furniture
- Automotive
- Transportation
- Aerospace
- General industrial
- Upholstery
- Point of Purchase (PoP) display
- Sample boards
- Military
- Window
- Trophies
- Novelties
- Audio components
- Cabinets
- Construction
- Electronics
- Assembly
- Repairing
- Potting
- Panel bonding
- Wire tacking
- Bundling
- Sealing
- Potting
- Encapsulating
- Rigidizing
- Foam bonding
- Gluing
Versatile Formula
3M Hot Melt Adhesive 3748 VO is self-extinguishing and has a UL 94 VO rating. In addition to its exceptional electronic applications, our adhesive formula is also useful in many general industrial bonding and sealing applications where a self-extinguishing characteristic is required. Throughout various industries, 3M Hot Melt Adhesives are used for potting and encapsulating where their flow and conformability allow them to fill into, or dome over, complex shapes. The shock-resistant formula protects components and wiring connections against vibration, minor impact and thermal shock.
Using 3M Hot Melt Adhesives uniformly distributes stress along the entire bond line. Nuts, bolts and other fasteners concentrate stress at a point which can decrease physical properties of the substrates being assembled. Uniform distribution along the bond line provides good fatigue resistance and the flexible properties of 3M Hot Melt Adhesive 3748 VO minimize stress from vibration or other movement. While many of our 3M adhesives provide a strong bond, they also add an effective seal against dirt, dust, water and other environmental conditions. Using hot melt adhesives is quicker and easier than soldering, requiring no soldering flux or associated fumes.
Hot Melt Characteristics
Low-melt adhesives/hot-glue sticks have a relatively low melting point of approximately 250 ? 270? F/127 ? 132? C and are applied with low-temperature applicators, commonly referred to as hot-glue guns. Low-melt adhesives are beneficial in that they can be used to bond heat sensitive materials such as foam and a range of plastics. They provide a nearly instant bond that allows the bonded surfaces to be separated when reheated. The aggressive hot tack nature of low-melt adhesives speeds up production and assembly operations that involve light gage metals, some plastics, and other non-fibrous materials in addition to building display boards, floral displays, and hobby projects. Low-melt adhesives are also widely used in manufacturing, assembly and packaging processes.

Dynabrade 96101 Dynabrade Air Lube 10W/NR 24 Per Box
3M 98878, General Use Flatback Tape 2515, Tan, 96 mm x 55 m, 8 Roll/Case, 7100048099
3M 31583, Hi-Strength Postforming 94 CA Fragrance Free Cylinder Spray Adhesive, Red, Large Cylinder (Net Wt 26.2 lb), 7010329925
3M 22392, Roloc Disc 361F, 24 YF-weight, TR, 3 in, Die R300V, 7000045090
Insize 7232, SCRIBER, 6928640320088
3M 97986, Hi-Strength 94 ET Cylinder Spray Adhesive, Red, Large Cylinder (Net Wt 26.2 lb), 7100018953
Dynabrade 78589 1/4" Dia. x 2" W x 1/8" Center Hole, 120 Grit, 100/pack
Dynabrade 95848 Dynabrade Gear Oil
3M 62612, Scotch-Weld Threadlocker TL71, Red, 10 mL Bottle, 7100039197, 10/case
3M 22394, Roloc Disc 361F, 50 YF-weight, TR, 3 in, Die R300V, 7000045096
3M 35083, EMI Copper Foil Shielding Tape 1181, 1/4 in x 18 yd (6,35 mm x 16,5 m), 7000132168
3M 62611, Scotch-Weld Threadlocker TL62, Red, 250 mL Bottle, 7100039195, 2/case
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
3M 26016, PPS Series 2.0 Adapter, Type S9, 16 mm Male, 1.5 mm Thread, 7100135330
Dynabrade 92151 1/2" W x 18" L 120 Grit Ceramic DynaCut Scalloped Edge Belt, 50/pack
Dynabrade 40610 Electric Dynafile II Abrasive Belt Tool
3M 25496, Scotch-Weld Epoxy Adhesive 2214 Non-Metallic Filled, Cream, 6 fl oz Cartridge, 7000121273, 4/case
Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty
Dynabrade 79173 2" W x 30" L 60 Grit Ceramic DynaCut Belt, 10/pack
3M 01708, Scotch-Brite SST Deburring Wheel, ST-WL, 8S Fine, 8 in x 2 in x 3 in, 7000144590
3M 02894, Scotch Printable Flatback Paper Tape 256, White, 3/4 in x 60 yd, 6.7 mil, 48/Case, 7000047439
Dynabrade 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
Dynabrade 78182 3" Dia. Medium DynaBrite Locking-Type Disc, 25/pack
Dynabrade 92116 1/2" W x 12" L 320 Grit A/O DynaCut Belt, 50/pack
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
3M 22393, Roloc Disc 361F, 36 YF-weight, TR, 3 in, Die R300V, 7000045093
Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
Dynabrade 78424 4-1/2" Dia. x 3/8" Medium DynaBrite Surface Conditioning Disc, 25/pack
3M 22407, Roloc Disc 361F, 80 YF-weight, TR, 1-1/2 in, Die R150S, 7000045099
Dynabrade 78295 3" Dia. x 6A M Medium Type R Unitized Locking-Type Disc, 25/pack
Dynabrade 78176 2" Dia. Medium NWN VT DynaBrite TR Locking-Type Disc, 25/pack
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
3M 85492, Scotch Foil Tape 3311-10A, 2.0 in x 10 yd (50.8 mm x 9,1 m), 7010383663
3M 27551, EMI Copper Foil Shielding Tape 1181, 1/2 in x 18 yd (12.70 mm x 16.5m), 7000132182
3M 33066, Cloth Belt 341D, P100 X-weight, 25 in x 48 in, Sine-lok, Single-flex, 7010308084, 5 per case
3M 11414, Roloc Disc 361F, P120 XF-weight, TR, 1 in, Die R100N, 7000045104
3M 45702, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 3 in x NH, Die 300V, 7100113117
3M 13767, Scotch-Brite EXL Unitized Wheel, XL-UW, 8A Coarse, 3 in x 1/2 in x 1/4 in, 7010365791
3M 87449 Silver Depressed Center Grinding Wheel, T27 Quick Change, 9 in x 1/4 in x 5/8-11 Center Hub Thread, 7010409732, 20 per case
3M 50258, Roloc Disc 777F, 60 YF-weight, TSM, 3 in, Die RS300VM, 7010325551
Standard Abrasives 42620, A/O Flap Wheel 621405, 1 in x 1 in x 1/4-20 in 60, 7010294994, 10 per case
Dynabrade 51731 .1 hp Straight-Line Pencil Grinder, 60,000 RPM, 1/8" Collet
3Mâ„¢ 72010, Replacement Filter Kit 523-01-29, 7000056891, 1 EA/Case
Standard Abrasives 547003, Adapter, 5/8"-11 Male x 3/8"-24 Female, 7010368726
3M 30708, Cloth Belt 577F, 120 YF-weight, 1/4 in x 18 in, Fabri-lok, Single-flex, 7010308884, 200 per case
3M 20910, PSA Cloth Disc 348D, 60 X-weight, 2 in x NH, Die 200P, 7000118872
Dynabrade 64404 36" W x 60" L (914 mm W x 1,524 mm L) Metal Capture Downdraft Table, 230 V (AC), Side Exhaust
ACS Diamond Cloth Belt, CX1250 3/8" X 24" 75U
3M 49456, EMI Aluminum Foil Shielding Tape 1170, 2 in x 18 yd, 1170-2"X18YD, 7000132702
3M 29833, Sanding Screen, 120 Grit, 18 in x NH, 7100160843
3M 17083, Versaflo Hood with Integrated Head Suspension, S-433L-5, Medium/Large, 7000029981, 5 EA/Case
Dynabrade 14000 Dynafile Abrasive Belt Tool
3M 86745, Diamond Disc, 2" Roloc, 674W, 120 Mesh, TR, 7100022116, Box of 10
3M 45700, Cubitron II Hookit Cloth Disc 947A, 60+ X-weight, 3 in x NH, Die 300V, 7100113109
3M 57173, Temflex Cotton Friction Tape 1755, 3/4 in x 60 ft, Black, 7000058870
3M 81729, Disc Pad Face Plate Ribbed, 9 in Hard Black, 7000148244
3M 26136, PPS Series 2.0 Adapter, Type S32, 18 mm Female, 1.5 mm
Thread, 7100135952
3M 85855, Cartridge Roll 747D, 80 X-weight, 5/8 in x 1-1/2 in x 3/16 in, 7010292565 
