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 53242 7" Dia. Type 27 Vertical Depressed Center Wheel Grinder, 3 HP, 6,000 RPM, 5/8"-11 Spindle
3M 73553, Mix & Dispense Equipment Nozzle, TS418, 4 in x 1/8 in, 7100207929
3M 26018, PPS Series 2.0 Adapter, Type S11, 3/8 Male, 18 Thread NPS, 7100135942
3M 76733, Cloth Belt 777F, 80 YF-weight, 6 in x 48 in, Film-lok, Single-flex, 7000118454, 20 per case
3M 11419, Roloc Disc 361F, P240 XF-weight, TR, 2 in, Die R200P, 7000045105
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 20227, Scotch-Seal Metal Sealant 2084, Silver, 5 oz Tube, 7000046343, 36/Case
3M 06506, Scotch Steel Gray Masking Paper, 06506, 6 in x 1000 ft, 6 per case, 7000045440
3M 10118, Synthetic Steel Wool Pads, 10118NA, #0 Fine, 7000126148
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
3M™ 72013, Adapter 529-04-50, 110-120 VAC, 7000131705, 1 EA/Case
3M™ 07011, Supplied Air Respirator Hose W-9435-50/07011(AAD), 7000005373, 1 EA/Case
Standard Abrasives 713638, Cartridge RoII Mandrel, 3/32 in x 3/4 in x 1/8 in x 1 in x 2-3/4 in CM-2B, 7010294964
3M™ 72787, Calibration Kit 529-04-48, Large, 7000052154, 1 EA/Case
3M 76783, Cubitron II Hookit Cloth Disc 784F, 120+ XF-weight, 5 in x NH, Die 500X, 7100222757
Dynabrade 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
3M™ 72010, Replacement Filter Kit 523-01-29, 7000056891, 1 EA/Case
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
3M 24049, Wetordry Cloth Disc 281W, P1000 YF-weight, 8 in x NH, Die 800JM, 7000045052
3M 45708, Cubitron II Hookit Cloth Disc 947A, 60+ X-weight, 6 in x NH, Die 600Z, 7100113142
3M™ 53797, Flexible Diamond Belt 6451J, 1/2" Dia x 18" L, M125 Micron, Type G, Pattern B2, 7010509272
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
3M 29832, Sanding Screen, 150 Grit, 18 in x NH, 7100160831
3M 05442, Stikit Soft Hand Block, 2-3/4 x 5 in, 7000045435
3M 86745, Diamond Disc, 2" Roloc, 674W, 120 Mesh, TR, 7100022116, Box of 10
3M 08107, Universal Adhesive Clear, 47.3 mL Cartridge, 7010294717, 6 per case
3M 28214, Cubitron II Roloc Disc 984F, 60+ YF-weight, TR, 2 in, Die R200P, 7010361116
3M 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
3M 62818, Adhesive Sealant 760 UV, Black, 600 mL Sausage Pack, 7000121496, 12/Case
3M 22392, Roloc Disc 361F, 24 YF-weight, TR, 3 in, Die R300V, 7000045090
3M 26586, Accuspray Refill Pack for PPS Series 2.0, Red, 2.0 mm, 7100161517
3M 77558, Cubitron II Hookit Cloth Disc 947A, 77558, 40+ to 120+, 6 in x NH, Die 600Z, 7100232737
Dynabrade 79152 1" W x 24" L 80 Grit DynaCut Premium Ceramic Belt, 50/pack
3M 25124, Scotch-Weld Threadlocker TL42, Blue, 1 L Bottle, 7010310189, 1/case
3M 22970, Disc Holder Adapter 9, 5/8-11 External 3/8-24 Internal, 7000046093
Standard Abrasives 714175, A/O Straight Cartridge Roll, 5/8 in x 1-1/2 in x 1/8 in 80, 7100103032 
