Description
Dowsil 340 White, non-curing and non-flowing thermally conductive compound
- DOWSIL 340 also known as Dow Corning 340 is silicone based thermally conductive compound providing thermal coupling of electrical and electronic devices to heat sinks.
- High thermal conductivity
- Low bleed
- Stable at high temperatures.
- Resists changes in consistency at temperatures up to +177°C
Applications
- DOWSIL™ 340 Heat Sink Compound is suitable for thermal coupling of electrical devices and PCB assemblies to heat sinks.
- Compound is applied to the base and mounting studs of transistors, diodes and silicon-controlled rectifiers.
- It can also serve as an effective thermal coupler for many heat sink devices where efficient cooling is required.
- It is also suitable for aircraft engines where heat sink properties are required.
Technical specifications
- Color: White
- Unworked Penetration [mm/10]: 300
- Drop Point [°C]: 300
- Oil Bleed 24h at 200°C, Max. [%]: 0.05
- Dielectric Constant at 100 Hz / 100 kH: 5
Hazard Information (CLP)

Signal Word: Warning.
Hazard Statements (H-phrases)
- H410: Very toxic to aquatic life with long-lasting effects.
Precautionary Statements (P-phrases)
- P273: Avoid release to the environment.
- P391: Collect spillage.
- P501: Dispose of contents/container to a recognized waste disposal facility.
Hazardous materials. The forwarding charges may be raised, if shipping to: DE, AT, NL, GB, CH, CZ, IT, ES, FI, NO, BE, IE, RO, PL, FR, PT, LU, DK, LI, GR, SE, SK, BG, SI, CA, LT, EE, LV, HR, SA,
DOW DEUTSCHLAND ANLAGENGESELLSCHAFT MBH, Rheingaustr. 34, 65201 Wiesbaden, GERMANY, +49 611 237007, [email protected], www.dow.com






josephine89 –
Pleasant to use at home.
Arthur K. –
Met my expectations. Good build quality and reliable.
Samuel –
Perfect and functional. Perfect from start to finish. Great item.
federico_it –
Easy to assemble. Satisfied with the quality. Top quality, fast delivery. Great item.
katy_99 –
Easy to use, without making a mess. Great product, worth every cent. No unpleasant smell; I really like that. Not too big, not too small, just right.
Hazel –
Easy to use, without making a mess. Surprisingly good quality for the price. Solved my problem completely! Not too big, not too small, just perfect.
Finn –
Great value for money. Everything went smoothly. Perfect match with the description. No complaints so far.
isaac_s –
Super practical. Great purchase, thank you. Highly recommended. Super value for the money.
felix_x –
Really good value for money.
Emma –
Super fast delivery, thank you. Solved my problem completely! Very satisfied, better than I expected. I’ve been using it for 2 weeks and already see results!
Alexander K. –
Feels sturdy. Exactly what I was looking for. Excellent service.