--- product_id: 736701159 title: "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" brand: "sanyi" price: "FREE" currency: EUR in_stock: false url: https://www.desertcart.fr/products/736701159-dow-corning-340-silicone-heat-sink-compound-5oz-142g-white store_origin: FR region: France --- # Dielectric strength 210 V/mil 0.67 W/mK thermal conductivity Non-flowing & non-curing stability 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 **Brand:** sanyi **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > ❄️ Keep your tech cool, calm, and connected—because overheating is so last season! ## Quick Answers - **What is this?** 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 by sanyi - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/736701159-dow-corning-340-silicone-heat-sink-compound-5oz-142g-white) ## Best For - sanyi enthusiasts ## Why This Product - Trusted sanyi brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Easy Application:** Grease-like consistency spreads smoothly, no ovens or curing needed—get instant results. - • **Reliable Stability:** Non-flowing, non-curing formula ensures consistent application without mess or degradation. - • **Long-Term Durability:** Low bleed and high temperature stability up to 177°C keep your components cool and reliable. - • **High Dielectric Strength:** Protect sensitive electronics with 210 V/mil insulation for safe, efficient operation. - • **Superior Thermal Transfer:** Maximize heat dissipation with 0.67 W/mK conductivity for peak device performance. ## Overview Dow Corning 340 Silicone Heat Sink Compound is a premium 5oz thermal grease designed for efficient heat transfer between electrical components and heat sinks. Featuring 0.67 W/mK thermal conductivity, non-flowing and non-curing properties, and a dielectric strength of 210 V/mil, it ensures reliable, mess-free application and long-term thermal stability up to 177°C. Ideal for PCB assemblies, CPUs, and power devices, it enhances device longevity by preventing overheating and corrosion. ## Description 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. Uses Designed for thermal coupling of electrical devices and PCB assemblies to heat sinks Benefits Thermally conductive compound 1 part Non flowing No need for ovens or curing Increases reliability with heat flow away from circuitry components Dow Corning 340 Thermal Compound is a grease-like silicone material with a high amount of thermally conductive metal oxide fillers. This compound has high thermal conductivity, low oil bleed and good high temperature stability. The compound can maintain consistency up to about 177°C. Therefore, it helps to maintain a reliable heat sink seal, which will improve the heat transfer from the electrical/electronic components to the heat sink or chassis. Dow Corning 340 Thermal Compound is used for bases and mounting bolts of transistors, diodes and thyristor rectifiers. It can also be used for effective thermal connection of many heat sinks that require effective cooling. Typical Use:Compound provides thermal coupling of electrical/electronic devices to heat sinks, can be applied to the base and mounting studs of transistors, diodes and silicon-controlled rectifiers. Brand:Dow Corning Color:White Components:1 part 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 ## 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DFWHK2GL | | Brand Name | SANYI | | Container Type | Tube | | Customer Reviews | 4.5 4.5 out of 5 stars (28) | | Flash Point | 101 Degrees Celsius | | Included Components | Paste, Paste Tube 5oz, Outer Box | | Item Form | Paste | | Item Weight | 142 Grams | | Liquid Volume | 5 Fluid Ounces | | Manufacturer | Molykote | | Material | Silicone | | Number of Items | 1 | | Part Number | 340 | | Recommended Uses For Product | Electrical | | Specific Uses For Product | Prevent Corrosion | | Unit Count | 5.0 Grams | ## Product Details - **Brand:** SANYI - **Item weight:** 142 Grams - **Liquid volume:** 5 Fluid Ounces - **Material:** Silicone - **Package information:** Tube ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/310NB+iiyLL.jpg) ![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 - Image 2](https://m.media-amazon.com/images/I/318BVgbkQjL.jpg) ![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 - Image 3](https://m.media-amazon.com/images/I/31HlHwg9efL.jpg) ![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 - Image 4](https://m.media-amazon.com/images/I/61IqM9VEPLL.jpg) ## Frequently Bought Together - 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 - GENNEL G109 10gram Thermal Conductive Glue, Heatsink Silicone Glue, Thermal Plaster, Silicone Viscous Adhesive Compound for LED GPU MOSFET Printer Chipset IC High Performance --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.fr/products/736701159-dow-corning-340-silicone-heat-sink-compound-5oz-142g-white](https://www.desertcart.fr/products/736701159-dow-corning-340-silicone-heat-sink-compound-5oz-142g-white) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-09-24*