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Silicone Foam for Electronics and EV Battery Packs

In the transportation sector, designing lighter weight components has widely become a key trend especially to reduce energy consumption and maximize the range of electric vehicles. CHT’s advanced Silicone Foam is designed to reduce weight – as well as mitigate thermal runaway and provide protection from moisture, debris, vibration and shock for electronic components and EV battery packs. CHT’s silicone foam is also ideal where low smoke, flame and toxicity are required.

CHT’s SilSo Lite 21025 is a two-part, room temperature platinum cure, self-blowing silicone foam which creates a closed-cell structure. It is formulated as a liquid system with a 1:1 mix ratio by volume and low viscosity, enabling easy dispensing either by cartridge or automated mixing machine. 

This silicone foam’s fast gel time will help increase production throughput and features primerless adhesion to a variety of substrates. Additionally, improved adhesion can be achieved by using one of CHT’s recommended primers. SilSo Lite 21025 will expand 2-3 times its liquid volume and will reach full cure in about 10 minutes. 

Addressing safety requirements, SilSo Lite 21025 exhibits excellent flame retardancy which will help mitigate a thermal runaway event. Independent testing is in progress to certify that SilSo Lite 21025 meets the UL 94 V-0 rating.

SilSo Lite 21025 Silicone Foam Key Features Include:

  • Flowable – low viscosity for easy dispensing
  • Fast curing – enhances process efficiency
  • Primerless adhesion
  • Medium density, closed cell
  • Flame retardant
  • Thermally insulative
  • Wide operating temperature range (-50 °C to 200+ °C)
  • Noise dampening and cushioning properties



CHT's Silicone Foam will benefit applications including:

  • Lightweight potting and encapsulation 
  • EV battery packs
  • PCB staking 
  • Insulation

Download the SilSo Lite 21025 product sheet

Interested in learning more about SilSo Lite 21025 or product samples? Contact our silicone experts.

Finding the right silicone for your application is not limited to CHT’s product portfolio. Our technical team will partner with you to either modify specifications in a current product or custom formulate a new one to meet your exact requirements.

Product Listing

Code Description Request Sample TDS SDS
SilSo Lite 21025 Two-Part Liquid Silicone Foam
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