🔥 Keep your tech chill and in the fast lane with Dow Corning 340!
Dow Corning 340 Silicone Heat Sink Compound is a premium, white, grease-like thermal interface material designed for efficient heat transfer between electrical components and heat sinks. Featuring a high thermal conductivity of 0.67 W/mK, non-flowing and non-curing properties, and excellent dielectric strength of 210 V/mil, it ensures reliable cooling and electrical insulation without the need for curing ovens. Ideal for PCB assemblies, CPUs, and power devices, this 5oz (142g) tube offers durable performance up to 177°C, minimizing thermal resistance and enhancing device longevity.
| ASIN | B0DFWHK2GL |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 34,011 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 64 in Thermal Paste |
| Colour | White |
| Customer Reviews | 4.7 4.7 out of 5 stars (16) |
| Date First Available | 5 Jun. 2025 |
| Included components | Paste, Paste Tube 5oz, Outer Box |
| Item Weight | 142 g |
| Manufacturer | Molykote |
| Manufacturer reference | 340 |
| Material | Silicone |
| Package Dimensions | 17.3 x 4.6 x 3.61 cm; 142 g |
| Part number | 340 |
| Size | 5oz |
| Specific uses | Prevent Corrosion |
S**T
Works great.
W**S
Easy to use and spread over desired electronics.
J**F
Works as advertised.
R**R
This thermal compound is not ideal for computer CPUs—its thermal conductivity is barely above water at 0.67 W/mK, while even budget CPU pastes range from 1-2 W/mK. However, where it shines is stability. It won’t dry out like other compounds, making it a solid choice for voltage regulators, power transistors, and similar applications where reliability matters more than peak performance. Recommended with that caveat.
L**E
Satisfied customer
Trustpilot
3 weeks ago
3 days ago
