ISRAEL'S TECHNOLOGICAL FRONTLINE IN DEFENSE, AEROSPACE AND SPACE

Hermetron specializes in producing some of the most sensitive and vital components for security, aviation and space systems products. From guided missiles and UAVs to air defense systems, tanks and armored vehicles, its high-performance components are used across Israel's most advanced defense platforms.
"We manufacture customized solutions for Rafael, Elbit and Israel Aerospace Industries (IAI)," says Hermetron CEO Leeor Gorstein. "Our strength is tackling and solving complex engineering challenges, and for this we invest heavily in innovation and integrating new technologies."

Built for Extremes: Maximum Durability in Hostile Environments
Hermetic headers and feedthroughs play a critical role in the sensitive electronics of missile detonators, rocket engines igniters and more, where durability and insulation are essential.

"In aerospace and defense, particularly in missile and airborne systems, it's vital to maintain a hermetically sealed, isolated environment," explains Gorstein. "Sensitive systems like electronic circuit boards can't survive exposure to humidity, corrosive salt or continuous vibration. They must be hermetically sealed yet still be able to transmit signals. Think, for example, of a missile control system: it must be fully protected against extreme conditions, but still transmit reliably to other parts of the missile."

This is where Hermetron's hermetic feedthrough comes in. It allows electrical signals to pass through sealed enclosures without compromising the system's integrity. "The hermetically sealed headers and feedthroughs that we manufacture are integrated directly into the system's casing," says Gorstein. "The connector body is made of metal with its internal electrical pins insulated by a glass seal, can withstand extreme conditions — high temperatures, pressure, even explosions — while continuing to function and protect the system's internal components. The hermetic header can effectively survive a high-temperature blast without any leakage into the electrical system."

He gives tank fire‑controls system as an example. "The hermetic connectors in this system must perform reliably at the critical moment, even after prolonged exposure to harsh environmental conditions from dust and dirt to vibration and humidity," he explains. That's why we subject our feedthroughs to stringent testing protocols, including accelerated aging, rigorous environmental stress trials and helium leak detector. Helium leak rates in our products are a mere 10⁻⁹ to 10⁻¹⁰ cc-He/sec — equivalent to 1 cc-He over 31 years."

Precision Manufacturing Meets Operational Excellence
Hermetron's advanced solutions are the product of exceptionally demanding manufacturing processes. "Production of hermetic headers requires extremely precise machining and, in some cases, use of advanced materials such as ceramics," says Gorstein. " In the past 10 years We've developed new products, including lightweight hermetic connectors that use aluminum and our proprietary material, GlassTomer™ — originally developed for IAI — as alternatives to stainless or traditional steel. This is a highly complex technological challenge, but we've mastered it, our test results showing that these solutions meet the highest operational standards."

In contrast to standard electronic components, Hermetron's systems are typically engineered to meet the unique specifications of each client. "We do offer some off-the-shelf products but the majority of our work is driven by specific demand," says Gorstein. "In many cases, it's not just a matter of being handed final drawings, we take an active role in the design process. As part of our service to the defense industry, we offer extensive consultation during the early design stages, helping to guide, refine and optimize the blueprints."

Israeli-Made and Globally Respected
Demand for Hermetron's solutions has surged in recent years, driven by both technological shifts and geopolitical realities. "In 2025, nearly every Rafael, IAI and Elbit product has included components that use hermetic technology," says Gorstein. "One example is the growing concern over GPS disruption in missiles and UAVs. We've recently seen Israel successfully disrupt the GPS guidance systems of incoming enemy missiles. As a result, both Israeli and international missile manufacturers are increasingly turning to alternative navigation technologies, especially those based on inertial accelerometers."

With hermetic electrical feedthroughs a necessary component for inertial accelerometers, demand for Hermetron's solutions is increasing. "This is just one example of the growing need for our technology," says Gorstein. "We now supply critical components for a wide range of defense systems, particularly advanced weaponry, precision-guided munitions, missiles and UAVs, including platforms like the Arrow missile system and the Iron Dome. We maintain perfect performance ratings with both Rafael and IAI, with a score of 100 in both quality and on-time delivery scores."

The increasing demand which Hermetron is experiencing is fueled not only by rapid technological progress but also by geopolitical developments. "We're the only Israeli company that manufactures advanced hermetic electrical feedthroughs entirely in-house," notes Gorstein. "In recent months, more countries have imposed arms embargoes on Israel, which further underscores our strategic importance as a local, independent solution, not reliant on any foreign government."

To support Israel's technological edge in defense, aerospace and space — from missiles and UAVs to tanks and armored personnel carriers — Hermetron continues developing and producing hermetic electrical feedthroughs, critical components that ensure system durability in the harshest environments. With its longstanding partnerships with industry leaders such as Rafael, Elbit Systems and IAI, Hermetron is setting a new benchmark for innovation through its European expansion and strong investment in human capital. The company proudly stands as a Blue and White symbol of national resilience, helping bring defense manufacturing back home to Israel.

A Legacy of Innovation and Growth
Founded nearly 60 years ago by Gorstein's father, Hermetron started out as a small factory focused on traditional glass-to-metal headers for Tadiran. Leeor Gorstein, equipped with two engineering degrees from the US a long engineering career, took over in the early 2000s when his father fell ill.

He relocated Hermetron to a new facility in Emek Hefer and hired top engineering, administrative and production talent. The adoption of AS9100 in 2014 (the international standard for aerospace quality management) further optimized its manufacturing processes. Growth of the transformed company accelerated rapidly. Following years of steady annual increases of 10 to 20 percent, Hermetron doubled its activity between 2023 and 2024 and is projected to double again in 2025 — fueled by strong client demand and a national initiative to return security manufacturing to Israel.

This year saw Hermetron relocate again, this time to a 1,200-square-meter plant in Caesarea which triples its former space. "Our growth trajectory is reflected in substantial order volumes projected for 2026 and 2027," says Gorstein. "We're currently expanding our production facilities and increasing our workforce to support development, scale operations and meet the evolving demands of the defense industry.

Global Reach and Human-Centered Leadership
Hermetron is also expanding into Europe, with a representative office in the Netherlands and a goal of making exports 40 percent of company revenue. In recent years, European countries have accelerated rearmament efforts with weapons and ammunition, driving increased demand for the company's technology.

"For us, expanding export is not only an economic objective but also a diplomatic mission," says Gorstein. "Commerce and technology can bridge divides and, in doing so, strengthen Israel's international standing."

Hermetron is committed to continuous enhancement of its technological capabilities, says Gorstein. "We're constantly exploring new systems and technologies to improve our production processes. We've invested significantly in automated testing systems and plasma technologies that purify the manufacturing environment down to molecular level. We're also expanding our expertise in emerging areas such as ceramic layers and ceramic chips."

In 2016, Leeor's son Saar joined Hermetron, becoming the family's third generation in the company. He leads the Quality Control department and introduces innovative technological solutions. Staying at the forefront of technology across all factors of operations remains a core priority.

Alongside technological advance, the company invests heavily in its human capital. "A key step in Hermetron's expansion is our commitment to strengthening the workforce," says Gorstein. "Today, my wife Vered leads our human resource and strategy efforts. We ensure rigorous and well-organized certification processes, and dedicate significant resources to training and updating procedures. Rewarding employees isn't just about pay. It's also about helping them understand the meaning and importance of their work, building their pride, motivation and a strong sense of belonging.

"Looking ahead, our focus remains on developing our human capital," concludes Gorstein. "This guiding principle shapes every aspect of our operations, from technological advance to cultivating talent, and reflects our ongoing commitment to operational excellence, our motto is Continuous Improvement Process."

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