KE-1204 A/B

Product Description

Shin-Etsu's KE-1204 A/B is a UL 94 V-0 rated, dual component, heat cure, potting encapsulant that will form a durable, flexible rubber to protect electronic components. KE-1204 A/B exhibits excellent high temperature resistance, electrical isolation, and adhesion to printed circuit board substrates, metals, plastics, glass, and ceramics.

Product Features

  • High temperature resistance (up to 260C intermittent)
  • Fast cure time
  • UL 94 V-0 certified
  • Dual component
  • 1:1 mix ratio
  • Heat cure
  • Self-leveling

Typical Applications

  • Protecting and electrically isolating electronic components


Typical Properties

Potting Encapsulant
Cure Type
One/Two Component
UL Listing
Low Molecular Weight Siloxane Stripped?
Reddish Brown
Density @ 23C (g/cm3)
Viscosity A (cps)
Mix Ratio by weight
Cure Conditions
15min @ 100C
Working Time
8 Hours
Shore A Hardness
Tensile Strength (MPa)
% Elongation
Volume Resistivity (TΩ·m)
Dielectric Strength (kV/mm)
Dielectric Constant
3.2 @ 50Hz
Dielectric Dissipation Factor
1x10-3 @ 50Hz
Thermal Conductivity (W/m·K)
Usable Temperature Range (C)
-40 to +200

Note: Values are not for specification purposes.

Warranty- The information and data contained herein are believed to be accurate and reliable; however it is the user's responsibility to determine suitability of use. Since Shin-Etsu Silicones, Inc. cannot know all of the uses to which its products may be put or the conditions of use, it makes no warranties concerning the fitness or suitability of its products for a particular use or purpose. You should thoroughly test any proposed use of our products and independently conclude satisfactory performance in your application. Likewise, if the manner in which our products are used requires governmental approval or clearance, you must obtain it. Shin-Etsu Silicones, Inc. warrants only that its products will meet its specifications. There is no warranty of merchantability of fitness of use, nor any other expressed or implied warranties. The user's exclusive remedy and Shin-Etsu Silicones, Inc.'s sole liability is limited to refund of the price or replacement of any product shown to be otherwise than as warranted. Shin-Etsu Silicones, Inc. will not be liable for incidental or consequential damages of any kind. Suggestions of uses should not be taken as inducements to infringe any patents.

KE-1204 A/B

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