Engineered Silicone Systems
Enabling Your Technology
Engineered Silicone Systems for High-Reliability Applications
At Gelest, we partner with innovators to push the boundaries of what’s possible. Our ExSil™ engineered silicone systems are developed through application-driven formulation to protect performance in demanding environments—delivering thermal stability, electrical insulation, mechanical protection, and long-term reliability across electronics, aerospace, and advanced manufacturing.
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Potting and Encapsulation
Gelest’s engineered silicone systems protect critical electronic assemblies in aerospace, space, and power electronics environments where thermal cycling, vibration, voltage stress, and environmental exposure challenge long-term reliability. Our patented self-bonding technology enables adhesion at low curing temperatures, while tailored potting and encapsulation systems provide electrical insulation, environmental sealing, and mechanical protection for consistent performance in demanding applications.
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High-Temperature Resistant Silicone Gels & Potting Systems
ExSil™ silicone gels and potting compounds are engineered to protect power electronics operating under sustained thermal stress. These low-modulus systems provide electrical insulation, mechanical stress relief, and stable performance across thermal cycling and elevated temperatures.
Flowable, heat-curable formulations offer excellent dielectric properties and can be tailored with flame-resistant chemistries to meet demanding safety and reliability requirements—delivering durable encapsulation for high-power, high-temperature applications.
Engineered Thermal Management for High-Performance Systems
As power density and system complexity increase, materials must perform reliably under demanding thermal and environmental conditions. Effective solutions must balance heat dissipation with electrical integrity and mechanical protection.
ExSil™ engineered silicone systems are developed for aerospace electronics, advanced automotive systems, and high-performance devices. Our portfolio includes thermally conductive materials, gels, and adhesives designed for specific substrates, geometries, and operating environments—supporting reliable performance in high-power applications.
Custom Silicone Solutions for Additive Manufacturing
Additive manufacturing is enabling complex, high-performance components across aerospace, defense, and advanced electronics. Silicone materials support intricate geometries and functional integration beyond traditional processing methods.
Gelest partners with equipment manufacturers to develop printable silicone formulations tailored to specific dispensing technologies and cure systems. Our materials are engineered for controlled rheology, reliable deposition, and strong interlayer adhesion—supporting print resolution, process consistency, and performance in demanding applications.
Engineered Silicone Systems
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Engineered Silicone Systems
Markets Served
Aerospace, Space & Defense
Materials engineered for mission-critical performance
Aerospace and defense systems operate in some of the most demanding environments on earth — and beyond it. From satellites and launch vehicles to hypersonic platforms and advanced avionics, these applications demand materials that remain flexible, durable, and stable across extreme temperature cycling, vacuum exposure, radiation, and sustained mechanical stress. Silicone materials are uniquely suited to meet these challenges, offering thermal stability, elastic compliance, and resistance to degradation under the most punishing conditions. Through the ExSil™ platform, Gelest partners with aerospace innovators to develop silicone formulations tailored to next-generation mission requirements.
Engineered for demanding aerospace and space environments
Drawing on deep expertise in silane and siloxane chemistry — the foundational building blocks of silicone materials — we work with system developers to design formulations that balance adhesion, mechanical compliance, processing behavior, and environmental durability.Applications include electronic encapsulation, composite interface protection, vibration mitigation, and thermal management across spacecraft and advanced avionics systems.
Medical Devices
Protecting the electronics at the heart of modern medicine
Medical devices increasingly incorporate miniaturized sensors, embedded electronics, and wireless components that must perform reliably within compact and mechanically dynamic environments. Materials used to protect these systems must maintain flexibility, electrical insulation, and long-term stability — all while meeting stringent device reliability requirements. ExSil™ soft silicone gels and encapsulation systems are engineered to help protect sensitive medical electronics from mechanical strain, moisture exposure, and environmental stress. Their low-modulus properties cushion delicate circuitry, sensors, and wire bonds while preserving stable dielectric performance within tightly integrated device architectures.
Engineered to support device-specific processing and performance requirements
Working closely with medical device developers, we collaborate on formulation development that supports reliable encapsulation and environmental protection across a range of applications — from wearable devices and diagnostic systems to next-generation medical technologies.Applications include wearable devices, implantable sensor assemblies, diagnostic electronics, and wireless medical platforms.
Advanced Industrial & Emerging Manufacturing
Versatile silicone systems built for the factory of the future
Advances in industrial automation, connected devices, and additive manufacturing are driving new requirements for materials that protect electronics while keeping pace with evolving production processes. Industrial systems increasingly integrate sensors, control electronics, and power components that must operate reliably within compact assemblies exposed to vibration, heat, and demanding duty cycles. Silicone materials provide a versatile foundation for these applications, offering inherent elasticity, thermal stability, and broad compatibility with complex assembly formats. The ExSil™ platform supports collaborative formulation development with technology manufacturers seeking materials aligned to their specific processing and performance needs.
Engineered for complex assemblies and next-generation manufacturing processes
Drawing from Gelest's capabilities in silane and siloxane materials design, we work with partners to develop silicone formulations that balance rheology, cure response, adhesion, and mechanical properties — including materials tailored for additive manufacturing applications requiring controlled deposition, interlayer adhesion, and dimensional stability.Applications include robotics and automation equipment, industrial IoT assemblies, power electronics, and additive-manufactured silicone components.
Semiconductor & Advanced Electronics
Silicone materials keeping pace with advanced packaging demands
As semiconductor devices evolve toward higher power densities, smaller geometries, and more complex packaging architectures, the materials used to protect and integrate sensitive components must evolve with them. Electrical insulation, thermal stability, and mechanical compliance must work together to ensure long-term reliability across temperature cycling, CTE mismatches, and increasingly integrated device structures. Silicone materials are well established in electronic assemblies for encapsulation, gap filling, thermal management, and environmental protection — and the ExSil™ platform brings a formulation-forward approach to meeting the specific demands of next-generation semiconductor applications.
Engineered for high-reliability performance in advanced semiconductor packaging
Combining molecular design expertise with collaborative formulation development, we work with semiconductor and electronics manufacturers to design silicone materials that balance dielectric performance, mechanical response, adhesion, and processing behavior within complex electronic assemblies.Applications include advanced IC packaging, power device encapsulation, sensor protection, thermal interface management, and next-generation heterogeneous integration.
About Gelest
Enabling Your Technology
Materials Science
An innovator in materials science and technology, Gelest manufactures and supplies specialty silanes, silicones, acrylates, and metal-organic compounds to some of the world’s most innovative companies.
Custom Synthesis
From aerospace to microelectronics, Gelest serves a diverse range of markets. We specialize in custom compound development to develop the exact solution for the exact client need.
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Gelest has cultivated a tightly connected network of worldwide distributors to support its clients, ensuring products get to where they need to be—on time, every time.
Working with Gelest
Gelest manufactures and supplies specialty silanes, silicones, acrylates, and metal-organic compounds to some of the world’s most innovative companies.
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