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CoolTherm® SC-320 THK Thermally Conductive Silicone Where to Buy

Product Information

LORD CoolTherm® SC-320 THK thermally conductive silicone is a two-component system designed to provide excellent thermal conductivity for electrical/electronic applications, while retaining desirable properties associated with silicones.

Shelf Life

Shelf life of each component is nine months from date of manufacture when stored at 25°C in original, unopened container.

CoolTherm SC-320 THK silicone evolves minute quantities of hydrogen gas. Do not repackage or store material in unvented containers. Adequately ventilate work area to prevent the accumulation of gas.

Features and Benefits

Low Stress - exhibits low shrinkage and stress on components as it cures.

Durable - composed of an addition-curing polydimethyl siloxane polymer that will not depolymerize when heated in confined spaces. 

Thixotropic Viscosity - maintains low viscosity during dispensing, with minimal flow after dispensing.

Environmentally Resistant - provides excellent thermal shock resistance.

UL Rated - provides excellent flame retardancy; UL 94 V-0 certified.

Typical Properties*

Mixed Appearance Light Pink Liquid
Mixed Specific Gravity 3.1
Gel Time, min @ 121°C 2 - 5
Working Life, min @ 25°C 40

Cured Typical Properties*

Volume Resistivity, ohm-cm @ 25°C > 1 x 1014
Thermal Conductivity, W/mk 3.0
Coefficient of Linear Thermal Expansion, ppm/°C 110
Hardness, Shore A 60
Tensile Strength, psi 290
Elongation at Break, % 50
Moisture Absorption, % < 0.1
Dielectric Constant, @ 25°C 6
Dissipation Factor, % @ 25°C < 1
Extractable Ionic Contaminants Chloride = <10
Sodium = <10
Potassium = <10
Ammonium = <10
Bromide = <10
Sulfate = <10

*Data is typical and not to be used for specification purposes.
Cure schedule of 60 minutes at 125°C.


Download Type Name
Download Safety Data Sheet CoolTherm SC-320 THK Resin
Download Safety Data Sheet CoolTherm SC-320 THK Hardener
Download Technical Data Sheet CoolTherm SC-320 THK Thermally Conductive Silicone
Download Filled Addition-Curing Silicone Encapsulant Handling/Application Notes

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