DOWSIL™ 340 Heat Sink Compound

Compound provides thermal coupling of electrical/electronic devices to heat sinks.

Get A Quote

Key Properties

NLGI Grade 2, white, used primarily as a non-curing and non-flowing thermally conductive compound.


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.

Features & Benefits

High thermal conductivity; Low bleed; Stable at high temperatures.

Product Details

Product Type: Compound
Chemistry: Silicone
NLGI Grade: 2
Thickener: Zinc Oxide
High Temp: 199°C
Low Temp: -40°C
Color: White
Hazmat: Yes


124.7 kg Drum :
12 ea Cartridge (12x382g): MIL-DTL-47113
12 ea Tube (12x142g): MIL-DTL-47113
1 kg Can :
9 kg Pail : MIL-DTL-47113

We Can Help

ChemPoint has chemists and engineers with experience and market expertise to help you find the right solution. We are ready to work with you to understand your environment and help define your lubrication requirements.