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Potting compounds for electronics: epoxy, silicone, or PU? | SILITECH

Potting compounds for electronics: epoxy, silicone, or PU?

Electronic assemblies must be reliably protected against moisture, mechanical stress, and temperature fluctuations. Encapsulants offer this protection—but which material is the right one? This technical article compares epoxy, silicone, and polyurethane encapsulants and shows when you should use which system.

property epoxy silicone polyurethane
temperature range -40°C to +130°C -60°C to +200°C -40°C to +120°C

Advice on casting compounds for your electronics application

Are you unsure which casting compound is best suited to your application? Our technical team will assist you in selecting the right material and advise you on processing, testing methods, and quality assurance.

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Potting compounds for electronics: epoxy, silicone, or PU? | SILITECH
SILITECH AG, Florian Liechti February 16, 2026
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