SCHOTT Eternaloc™ glass-to-metal-sealed (GTMS) penetrations are also used in other special applications, which secure the energy supply in compressors and pumps for fermentation gas, methane and other critical gases.
We deliver the most reliable, service-free containment penetrators, particularly when highly critical media are involved.
We have the capability to design and manufacture penetrations according to the customer's specifications, in small lots as well as large series:
We have accumulated more than 50 years of experience and leading engineering know-how, to carry out customer-specific development of safety-related cable and thermocouple penetrations.
In addition, our penetrations are fully maintenance-free ("fit and forget").
Our hermetically sealed penetrations are well-suited for special applications, which secure the energy supply in compressors and pumps for fermentation gas, methane or other critical gases.
The glass preform, metal shell and conductor pins or tubes for thermo-couples, made of nickel-iron alloy, are assembled on a fixture. The complete assembly is heated to a temperature where the glass becomes free-flowing and fills all the gaps between the metal parts.
During the cooling process, the glass solidifies at its set point. Upon further cooling, the outer metal housing shrinks more than the glass seal (due to its higher coefficient of thermal expansion), leading to a compressive radial force onto the glass body. This leads to an increased hermeticity and tightness even under high temperature or gas pressure.
The nickel-iron conductor pins are plated with a gold or silver finish.
Features / Specifications
Forms of Supply and Product Packaging
We can deliver products in accordance to customers’ dimensional requirements. Upon request, we can also deliver sockets and o-rings.
Our products are delivered in dust-safe, moisture-safe, impact-proof transportation boxes.
During testing, we determine the quality by testing the penetrations at: