---
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: "10857 kr"
currency: ISK
in_stock: true
reviews_count: 6
category: "Sanyi"
url: https://www.desertcart.is/products/654788092-dow-corning-340-silicone-heat-sink-compound-5oz-142g-white
store_origin: IS
region: Iceland
---

# 210 V/mil dielectric strength 0.67 W/mK thermal conductivity Non-flowing, no mess application 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:** 10857 kr
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your tech chill and running smooth with Dow Corning 340!

## 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?** 10857 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/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

- • **Mess-Free Application:** Non-flowing, low-bleed formula means no drips, no fuss—perfect for professional-grade PCB assemblies.
- • **Electrical Safety First:** Exceptional dielectric strength and volume resistivity protect your circuits while maximizing performance.
- • **Precision Heat Transfer:** Optimized thermal coupling boosts reliability by efficiently channeling heat away from sensitive components.
- • **Stay Cool Under Pressure:** High temperature stability up to 177°C ensures your electronics never overheat.
- • **Effortless Thermal Mastery:** One-part, grease-like silicone that requires no curing or ovens—just apply and go.

## Overview

Dow Corning 340 Silicone Heat Sink Compound is a premium, white, grease-like thermal interface paste designed for professional electrical and PCB heat management. Featuring 0.67 W/mK thermal conductivity, non-flowing consistency, and high dielectric strength (210 V/mil), it ensures efficient heat transfer and electrical insulation without curing or mess. Ideal for transistors, diodes, and CPU heat sinks, it maintains stability up to 177°C, enhancing device reliability and longevity.

## 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 | #111,632 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #547 in Industrial Lubricants |
| Brand | SANYI |
| Brand Name | SANYI |
| Container Type | Tube |
| Customer Reviews | 4.7 out of 5 stars 19 Reviews |
| 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 |
| Package Information | Tube |
| Recommended Uses For Product | Electrical |
| 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 Iceland*
*Store origin: IS*
*Last updated: 2026-02-02*