---
product_id: 654788092
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: "₪234"
currency: ILS
in_stock: true
reviews_count: 6
category: "Sanyi"
url: https://www.desertcart.co.il/products/654788092-dow-corning-340-silicone-heat-sink-compound-5oz-142g-white
store_origin: IL
region: Israel
---

# 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:** ₪234
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your tech cool and your workflow hotter!

## 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?** ₪234 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/654788092-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

- • **Powerful Protection:** Dielectric strength of 210 V/mil safeguards your circuits from electrical interference.
- • **Precision Heat Control:** Non-flowing formula ensures consistent, mess-free application every time.
- • **Stay Cool Under Pressure:** High temperature stability up to 177°C keeps your electronics reliably chill.
- • **Effortless Thermal Mastery:** One-part, grease-like silicone for instant heat transfer—no curing needed.
- • **Engineered for Reliability:** Low bleed and high viscosity maintain a durable thermal interface for long-term performance.

## Overview

Dow Corning 340 Silicone Heat Sink Compound is a premium, white, grease-like thermal coupling paste designed for electrical devices and PCB assemblies. With a thermal conductivity of 0.67 W/mK and dielectric strength of 210 V/mil, it offers superior heat transfer and electrical insulation. Its non-flowing, non-curing formula ensures easy application and long-lasting stability up to 177°C, making it ideal for enhancing the reliability and lifespan of CPUs, transistors, and other heat-sensitive components.

## 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

Review: Good stuff - Works great.
Review: Easy to apply - Easy to use and spread over desired electronics.

## 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 |
| Best Sellers Rank | #116,465 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #562 in Industrial Lubricants |
| Brand | SANYI |
| Date First Available | September 2, 2024 |
| Flash Point | 101 Degrees Celsius |
| Item Form | Paste |
| Item Weight | 5 ounces |
| Liquid Volume | 5 Fluid Ounces |
| Manufacturer | Molykote |
| Material | Silicone |
| Number of Items | 1 |
| Package Dimensions | 6.81 x 1.81 x 1.42 inches |
| Package Information | Tube |
| Recommended Uses For Product | Electrical |
| SAE J300 Viscosity Grade | 0W-16 |
| Specific Uses For Product | Prevent Corrosion |
| Unit Count | 5.0 Ounce |

## 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/61IqM9VEPLL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good stuff
*by S***T on November 1, 2025*

Works great.

### ⭐⭐⭐⭐⭐ Easy to apply
*by W***S on August 22, 2025*

Easy to use and spread over desired electronics.

### ⭐⭐⭐⭐⭐ Great product!
*by J***F on August 5, 2025*

Works as advertised.

## 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
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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-01-30*