SANYI
Dow Corning 340 Silicone Heat Sink Compound 5oz 142g White Silicone Thermal Coupling Heat Conductive Grease for Electrical Devices PCB Assemblies Computer CPU Heat Sink Non Flowing
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
Dow Corning DOWSIL 340 Heat Sink Compound White is a one component, grease like silicone that is used for thermal coupling of electrical components to heat sinks. It is non-flowing, non-curing, thermally conductive, low bleed, and has high temperature stability.142 g Tube.White, non-flowing, highly filled compound, good thermal conductivity.UsesDesigned for thermal coupling of electrical devices and PCB assemblies to heat sinksBenefitsThermally conductive compound1 partNon flowingNo need for ovens or curingIncreases reliability with heat flow away from circuitry componentsDow Corning 340 Ther…
SpecPicks Verdict
SpecPicks classifies Dow Corning 340 Silicone Heat Sink Compound 5oz 142g White Silicone T… as a category leader on buyer feedback in the cpu coolers & fans category, based on 24 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. SANYI's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for cpu coolers & fans of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Highly rated — 4.7★ average across customer reviews
- ✓ Designed for thermal coupling of electrical devices and PCB assemblies to heat sinks
- ✓ Backed by SANYI's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Limited review volume so far — fewer data points on long-term reliability
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Dow Corning 340 Heat Sink Compound, 5oz 142g one tube, Heat Sink Compound, White color, Thermal coupling, Heat Sink & Conductive, Non-flowing, Non-curing, Low bleed, High temperature stability.
- Designed for thermal coupling of electrical devices and PCB assemblies to heat sinks
- Dielectric Strength:210 V/mil. Flash Point:>101.1 °C. Specific Gravity: 2.1. Thermal Conductivity:0.67 W/mK. Viscosity:542,000. Volume Resistivity:2 x 10^15 ohm-cm.
- Thermally conductive compound, 1 part, Non flowing, No need for ovens or curing, Increases reliability with heat flow away from circuitry components
Full Specifications
| Brand | SANYI |
|---|---|
| Weight | 5oz |
| Material | Silicone |
| Item Form | Paste |
| Unit Count | 5.0 Ounce |
| Flash Point | 101 Degrees Celsius |
| Part Number | 340 |
| Liquid Volume | 5 Fluid Ounces |
| Container Type | Tube |
| Number of Items | 1 |
| Dielectric Strength | 210 V/mil. Flash Point:>101.1 °C. Specific Gravity: 2.1. Thermal Conductivity:0.67 W/mK. Viscosity:542,000. Volume Resistivity:2 x 10^15 ohm-cm. |
| Included Components | Paste, Paste Tube 5oz, Outer Box |
| Package Information | Tube |
| SAE J300 Viscosity Grade | 0W-16 |
Ready to buy?
Dow Corning 340 Silicone Heat Sink Compound 5oz 142g White Silicone Thermal Coupling Heat Conductive Grease for Electrical Devices PCB Assemblies Computer CPU Heat Sink Non Flowing is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
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