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.

3M 22404, Roloc Disc 361F, 80 YF-weight, TR, 3 in, Die R300V, 7000045100
3M 26116, PPS Series 2.0 Adapter, Type S25, 1/4 Female, 19 Thread BSP, 7100135957
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 84158, Microfinishing PSA Film Disc 366L, 30 Mic 3MIL, Type D, 5 in x NH, Die 500X, 7010360217, 500 per case
Norton 66261126299 - 2" X 50 Yard 80 Grit Metalite™ Aluminum Oxide Cloth Roll, 1 Each
3M 77558, Cubitron II Hookit Cloth Disc 947A, 77558, 40+ to 120+, 6 in x NH, Die 600Z, 7100232737
3M 20930, PSA Cloth Disc 348D, P120 X-weight, 1 in x NH, Die 100N, 7000118916
Dynabrade 95848 Dynabrade Gear Oil
3M 77512, Cloth Belt 777F, 60 YF-weight, 1 in x 42 in, Film-lok, Single-flex, 7010307736, 200 per case
3M™ 07011, Supplied Air Respirator Hose W-9435-50/07011(AAD), 7000005373, 1 EA/Case
Standard Abrasives 725002, Buff and Blend Cross Buff GP, A/O VFN, 1-1/2 in x 1/2 in x 2 Ply x 8-32, 7010368694
3M™ 72787, Calibration Kit 529-04-48, Large, 7000052154, 1 EA/Case
3M 01328, PSA Cloth Disc 348D, P180 X-weight, 3 in x NH, Die 300V, 7000045068
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
3M 29882, Sanding Screen, 220 Grit, 18 in x NH, 7100160813
3M 86992, Diamond Disc, 3" Roloc, 674W, 120 Mesh, TR, 7100143477, Box of 5
3M™ 72013, Adapter 529-04-50, 110-120 VAC, 7000131705, 1 EA/Case
3M 87103, Cloth Belt 341D, 24 X-weight, 9 in x 20 in, Fabri-lok, Single-flex, 7010326200, 20 per case
3M 21543, Scotch-Brite Roloc Clean and Strip XT Pro Extra Cut Disc, TR, 2 in x NH, A XCS, 7100179815, 60/box
Dynabrade 79932 6" Dia. x 320 Grit Vacuum PSA DynaCut Disc, 100/Pack
3M 22394, Roloc Disc 361F, 50 YF-weight, TR, 3 in, Die R300V, 7000045096
3M 19764, Utility Cloth Sheet 314D, 9 in x 11 in P320 J-weight, 7000000352
Dynabrade 51731 .1 hp Straight-Line Pencil Grinder, 60,000 RPM, 1/8" Collet
3M 45038, Wheel Adapter Kit No.3, 5/8-11 External, 7000028423
Dynabrade 51703 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 50,000 RPM, 1/8" Collet
3M 28817, STIKIT LOW PROFILE DISC PAD, EXTRA FIRM, 5 IN X 3/8 IN X 5/16 IN, 24 EXTERNAL, 7010361145
3M 45714, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 3 in x NH, D/F 3HL, Die 300BE, 7100113113
3M 41531, Scotch-Weld Epoxy Adhesive 420, Black, Part B, 5 Gallon Drum (Pail), 7000000827
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
ACS Diamond Cloth Belt, CX1250 1/2" X 18" 125U
Norton 66254489957 Wheel, Vortex-7am, 6" X 1/2" X 1" C2312 Nor VTME7 PH VTC+, 4 Each
3M™ 72016, Remote Alarm & Strobe 529-05-20, Audible, 7000131708, 1 EA/Case
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
3M™ 07010, Supplied Air Respirator Hose W-9435-25/07010(AAD), 25 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005374, 1 EA/Case
3M 05710, Buff Pad Adaptor, 05710, 5/8 in, 7100017371 
