Top 10 Best thermally conductive epoxy in 2026

Last Updated - 7/3/2026

🏆Best Choice

GENNEL

GENNEL G109 10gram Thermal Conductive Glue, Heatsink Silicone Glue, Thermal Plaster, Silicone Viscous Adhesive Compound for LED GPU MOSFET Printer Chipset IC High Performance

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Non-Electrical Conductive,Non-corrosive ,Non-toxic,Suitable for all heatsink without fixed clip. It has heat conducting properties, strong adhesion. Helps disperse the heat from Chipset to heatsink effectively.
•Use for MOSFET, LED, heat sinks , North-south bridge, video card, Chipset, heat dissipation part, heat dissipation, electrical appliances, instruments and other industries.
•It has good thermal conductivity and wide service temperature range(-60~280 degrees Celsius)
•Thermal conductivity:> 1.5W/m-K, Do not use thermal glue "between CPU and HEATSINK"!
•Package Includes : 1 x GENNEL G109 10g thermal glue

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$7.99

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American Science & Surplus

Electrically Conductive Wire Glue

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Soldering Gun in a Jar Wire glue-the solution when you can't find the soldering iron, don't want to bother, are out in the woods, don't quite trust a fifth-grader with a hot gun, can't reach the connection with both hands, whatever. This stuff conducts low voltage AC and DC circuits in a permanent bond and is easy to use. Our high-tech support group suggests that a toothpick is a good way to apply it. Cures overnight. Our each is a 0.3 oz/9ml jar.

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$8.90

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3M Scotch-Weld Epoxy Adhesive DP100 Plus, Clear, Professional Grade, Fast Handling and Cure, 48.5 mL (1.64 fl oz) Duo-Pak

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•PROFESSIONAL-GRADE ADHESIVE: This fast-potting agent bonds metals, ceramics, glass, and many plastics in applications with thermal cycling
•VERSATILE APPLICATION: Excels accross transportation, specialty vehicle, electrical, general industrial, sporting goods, construction, and consumer goods industries
•IDEAL FOR THERMAL IMPACT: Flexible when cured, this epoxy is excellent for bonding dissimilar surfaces where resistance to flexing, vibration, and other stressors is needed
•IMPACT PERFORMANCE: Forms a long-lasting bond with high shear strength and good peel/impact performance
•For industrial/occupational use only. Not for consumer sale or use

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$25.36

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Atom Adhesives

Low Cost, Low Volume Resist, Electrically Conductive Silver Epoxy Adhesive, AA-Duct 906, 2.5gm kit

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Viscosity At 25 °C cps Paste, Silver coated ceramic 50-75 %, Pot Life At 25 °C 30 minutes
•Mechanical Properties Hardness, Shore D 81, Compressive Strength, psi 13,600
•Volume Resistivity less than 0.0015
•Appearance Silver, Cure Type Heat cure or Room temperature
•Mix Ratio,100:5 Resin/Hardener

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$12.99

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Bymugo

HY910 20gram Thermal Conductive Glue, High-Performance Thermal Plaster, Silicone Viscous Adhesive Cooling Compound, Heatsink Glue for GPU LED MOSFET 3D Printer IC Chipset

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•High Thermal Conductivity - With a thermal conductivity rate of 0.975W/m-K, this thermal conductive glue helps disperse heat effectively from MOSFETs, LEDs, ICs, GPU chipsets, and other electronic components that require direct bonding. It is suitable for all heatsinks without a fixed clip, and can be used for a wide range of applications.
•Safe and Non-Electrical Conductive - This thermal adhesive is non-electrical conductive, safe, and non-toxic, making it safe for both users and electronic components. It is odorless, moisture-resistant, and non-swelling, ensuring that it does not damage the substrate over time. Important: it is important to note that this thermal glue should not be used between the CPU and heatsink.
•Strong Adhesion - This thermal plaster features strong adhesion properties that allow it to bond with most metals and non-metals, ensuring a reliable and long-lasting connection. The adhesion and tensile strength is 2.1（MPA）, making it a high-performance option that delivers excellent results.
•Quick Drying Time - This thermal adhesive cures quickly upon contact with air, with a drying time of approximately 30 minutes at 25℃. This makes it easy and convenient to apply, with minimal downtime required.
•Wide Service Temperature Range - With a service temperature range of -60~250 degrees Celsius, this thermal adhesive is suitable for use in a wide range of industries and applications. It has good thermal conductivity and stability, and is ideal for use in electrical appliances, instruments, and other industries that require effective heat dissipation.

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$8.99

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WANJAO

WANJAO Electronic Potting Compound, Thermally Conductive Epoxy Thermal Adhesive Insulation Waterproof Sealant for Electronic Component Packaging Led Power Supply Circuit Board Protection, 480g A+B

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Insulation and Waterproofing: The potting compound has excellent insulation and waterproofing properties, effectively preventing the ingress of water , and protecting electronic.
•Easy to Use:Two-component thermal epoxy(400g A glue + 80g B glue),weigh the AB materials ratio of 5:1,mix stir them evenly,into the objects that need to be poured,wait for cure .It usually takes 24hours to completely cure.
•Strong adhesion: This thermally conductive epoxy has super-strong adhesion and can adhere tightly to the surface of various materials, forming a strong protective layer.
•Temperature Resistance: Potting compound for electronics can withstand the temperature range of -40℃~120℃, this thermal conductive potting glue can maintain stable performance and will not crack or fail due to temperature fluctuations.
•Wide Range of Applications: Circuit board glue excellent for PCB, Resistors, Intricate Circuitry and Components, ensuring safe and reliable device operation.

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$15.99

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Atom Adhesives

Electrically Conductive Epoxy, Silver Adhesive, Room Temperature Cure, Air Dry AA-Duct 902, 2.5gm kit (1) (One Pack)

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Spec. Gravity 2.79 g/cc Mixed Viscosity Paste At 25°C Reactive solids contents, % 100,Pot Life 3 hrs
•Hardness, Shore D 83 Adhesive Operating
•Volume Resistivity > 0.0001,Shrinkage linear in/in 0.003 Lap shear strength, psi 9600
•Operating Temperature --50 to +170 °C,Appearance Silver
•Cure Time 2 minutes At 120°C,5 minutes At 100°C,12 hours At 25°C

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$14.99

$18.99

-21%

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MG Chemicals

MG Chemicals 832TC-450ML Thermally Conductive Epoxy Encapsulating and Potting Compound, 15 oz Kit, Black

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Excellent electrical and thermal conductivity
•Easy 1:1 mix ratio
•Strong water and chemical resistance to brine, acids, bases, and aliphatic hydrocarbons
•Suitable for large production runs
•Excellent machining properties

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$78.95

$89.95

-12%

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MG Chemicals

MG Chemicals - 8329TFF-50ML 8329TFF Thermally Conductive Adhesive - Fast Cure Epoxy, 45 mL Dual Cartridge

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Thermal conductivity of 0. 8 W/(m·K)
•1:1 mix ratio
•Working life: 4 minutes, set time: 15 minutes
•Cure time: 3 hours at room temperature or 15 minutes at 65 °c (149 °f)
•Flame retardant – UL 94V-0 registered

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$41.71

$57.55

-28%

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Easycargo

Easycargo Thermal Glue, High Performance Silicone Thermal Conductive Adhesive Glue, Cooler Epoxy Compound for Heatsink GPU VRM VRAM LED IC Chips MOSFET BJT Transistor 3D Printer PCB Tec1-12706

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•10 gram high performance thermal glue with strong adhesion.
•Thermal conductivity > 0.975 w/mk
•Thermal Impedance: < 0.06
•Non-Electrical Conductive, Non-corrosive ,Non-toxic, High Performance, Working at High temprature for cooling electronics, robotics.
•Premium thermal glue for bonding and conducting heat at the interface of cooler heatsink and GPU VRM VRAM PCB LED, BJT MOSFET transistor, Voltage regulator, IC Chips, Thermoelectric Peltier Cooler Module

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$6.99

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