Technology / product information

Hermetic seals, commonly found in compressors, hard drives, and various automotive applications, are specialized components designed to ensure a complete and continuous seal. This sealing is crucial for protecting sensitive components from external factors such as moisture, dust, and other contaminants that could damage functionality and lifespan. The term "hermeticity" in this context refers to the quality of being airtight, essential for the reliable operation of many mechanical and electronic systems.

Compressors
In compressors, especially those used in refrigeration and air conditioning systems, hermetically sealed terminals play a critical role in sealing the electrical connections that power the compressor motor. This seal prevents refrigerant gas from leaking out and moisture or other substances from entering, which could lead to corrosion or short circuits. Compressors may be completely encased in a hermetic shell, with the terminals being one of the few external connection points. The integrity of these terminals is crucial for the safe and efficient operation of compressors throughout their intended lifespan.

Hard Drives
For hard drives, particularly those used in high-reliability applications or harsh environments (such as in aviation or military), hermetically sealed terminals can be critical. They seal the drive's case, ensuring that the internal magnetic disks are not exposed to external air and contaminants. This sealing helps maintain the consistency of the internal environment, stabilizing data and preventing failure due to corrosion or particle damage. While not all hard drives are sealed this way (with many consumer-grade drives being unsealed), those requiring durability and high reliability often utilize this technology.

Automotive Applications
In the automotive industry, hermetically sealed terminals are used in various components, including sensors, control units, and battery systems, particularly in electric and hybrid vehicles. These terminals ensure that critical electronic systems are protected from the harsh environments encountered in automotive settings, such as moisture, road salt, and extreme temperatures. For example, in battery packs for electric vehicles, such sealing of terminals can prevent moisture ingress, which is crucial for both safety and battery lifespan as moisture can lead to short circuits and corrosion.

Importance of Hermetically Sealed Terminals
The use of hermetically sealed terminals in these applications underscores their importance in ensuring the durability and reliability of systems critical to everyday life and safety. The design and material selection for these terminals are carefully considered to match the specific requirements of the application, including temperature ranges, chemical exposure, and mechanical stress.

Sealing technology continues to evolve, including advanced materials and designs to meet the increasing demands of modern applications. Whether it's ensuring the reliability of household refrigeration, protecting the integrity of data in computing, or enhancing the safety and efficiency of vehicles, hermetically sealed terminals play an irreplaceable role in contemporary technology.