The Creation of Hermetic Feedthroughs

Hermetic feedthroughs are designed specifically to all some substances or energy to pass from inside or outside a hermetically-sealed area to the other side. The feedthroughs must deliver both hermeticity and electrical isolation. They must be secure enough to prevent even the smallest degree of leakage while maintaining a powerful vacuum. There are three main types of hermetic feedthroughs: low voltage, water-cooled and RF (high frequency), and high-voltage feedthroughs. Applications for these items include furnaces, analysis equipment, satellite instrumentation, particle accelerators, and X-ray equipment.

How Is the Hermetic Seal Achieved?

How are hermetic feedthroughs achieved? When a glass-to-metal hermetic feedthrough is desired, industry leaders use high temperatures to melt glass to the point that they can be tightly bonded to metal. When done correctly, these feedthroughs can be used in applications such as those involved in electrical situations. These products are highly resistant to dramatic temperature changes, as well as fluctuations in pressure and humidity. Many of these products are plated to resist corrosion as well as improving the items capacity for wire bonding or soldering. Naturally, the pin and body formation of some hermetic feedthroughs require even tougher standards of excellence. This is the case for items destined to be found in medical equipment, especially used in diagnosis and sensing.

Choosing the Right Hermetic Feedthrough and Seal

Although you’ve developed a system that requires a hermetic feedthrough and seal, you may not have the knowledge and experience to fully know what type of system and materials should be used to be most effective when your product is in use. Our engineers specialize in hermetic feedthroughs and seals in many different industries to help you move forward with your project.

There are many different ways to create the vacuum and hermetic feedthrough. In a glass-to-metal seal, the methodology of design and development depend on multiple factors. There are plating capabilities which let the hermetic seal work better under different conditions. If your project operates under higher voltage or temperatures, a ceramic-to-metal application may the right product to fit your needs. Because we have worked with medical, military, optics, and aerospace organizations, we have the depth of knowledge to design a prototype to meet your specifications.

Discuss your project with our engineers to find the perfect hermetic feedthrough and sealing system that matches your industry. We design and manufacture custom products that work under specific conditions. Our products are tested before use to ensure the reliability of the seal and feedthrough. We understand that you need the materials to fit the scope and scale of the project while managing your budget. Contact us and let us help.

Glass-to-Metal Seals

Creating the Hermetic Sealing for Your Application

It used to be difficult to get an airtight seal for distillation and other processes. Today’s technology makes hermetic sealing much easier to attain, when you have the right engineers behind your development team. Although many companies attempt to use an O-ring or epoxy to get the hermetic seal, there are other processes which work more effectively in certain applications. We know how to find the right product for your project.

Our team of engineers works with you to find the right combination of materials that will meet your specifications. Glass-to-metal seals are extremely effective under some conditions, but higher heat or voltage may require a ceramic-to-metal hermetic sealing solution. When you need the chemicals and gases to be airtight in your application, let us help develop the right seal. We test each product to ensure its reliability and results before use.

Finding the right solution for each application is right in our wheelhouse. Our engineers specialize in creating hermetic sealing for specific projects and prototypes to meet the individual specifications of each product. We’ve worked with many industries, for example, aerospace, pharmaceutical, and military. Our engineers use the latest technology and tools to design and develop hermetic sealing products to fit your needs. Let us work with your team to get your project moving forward.

Custom Hermetic Feedthroughs

Hermetic Seals Company Customization

A hermetic seals company creates packaging technology that is designed to be airtight, moisture-tight and gas-tight. They are a highly reliable for harsh environments and help extend the life of interconnect technology inner workings. These tightly sealed packages help protect delicate components while also providing an interconnect. A hermetic seals manufacturer makes custom glass-to-metal and ceramic-to-metal seals and feedthroughs suitable for a variety of applications.

Quality Matters

Packaging of electronic systems must take into consideration many factors. These factors may include

  • Protection from mechanical damage
  • Protection from electrostatic discharge
  • Operator convenience
  • Cooling
  • Maintenance

High quality materials are vital for glass-to-metal and ceramic-to-metal seals. Working with a professional hermetic manufacturer ensures that any recommendations are based on many years of experience.

Working With Professionals

When it comes to quality, a professional hermetic seals company is a necessity. Hermetic glass/metal cases started with the vacuum tube industry. They provide a totally leak-proof housing. The glass-seal electrical feedthrough prevents leakage even under extreme changes in temperature, humidity and pressure.

Hermetic ceramic/metal packages are more convenient than their glass/metal counterparts for some products while performing just as well. They can be divided into two main types: pressed ceramic packages and multilayer ceramic packages.

Talk to the professionals when it comes to hermetic packaging. They can help you find the right materials for the job and create custom products that fit your needs.

Which Is the Best Hermetic Seal: Glass or Ceramic?

If you are in the market for a hermetic seal, you may wonder if it is better to purchase a glass to metal seal or a ceramic to metal seal. Each variety has its respective advantages and disadvantages. Some people prefer to stick with one kind, while others use different seals depending on the function.

Glass to Metal Seal and Feedthrough

A glass to metal seal is made with glass molten right to the metal. This provides an advantage of a secure seal that is connected directly with the metal. Glass is thought of as fragile, but it has a high level of compression strength. It is also a less expensive alternative to ceramic seals.

Ceramic to Metal Seal

A ceramic to metal seal is more costly than a glass to metal seal, and some say the difference in price is worth it. Ceramic can be made in custom designs and show more resistance to mechanical and thermal shocks. However, these seals can have a greater tendency to chip than glass does, but can last longer before these chips form.

Some people swear by their favorite kind of glass to metal seal, while others prefer ceramic. The kind you choose depends on the job you need to do, cost considerations and how much shock you want the seal to withstand.

Understanding Hermetic Seal Types and Uses

A hermetic seal is known as a go-to choice for superior protection when it counts. Whether you require protection from air, gasses, moisture, soil or any other hazard, hermetic connections are the gold standards across many industries. But a seal protects best when it is the right seal for the job. Learn more about the main types of hermetic sealing and find out which ones are best for your job.

To start with, there are three main types of airtight seal. They are:

  • Glass to glass seal
  • Glass to metal seal
  • Ceramic to metal seal

Glass to Glass Hermetic Seals

When two glass pieces require a perfectly sealed environment, glass to glass sealing is the choice. As many as five layers may be involved in the creation this type of seal, which is often used in sealing flat windows, glass tube components and glass envelopes to name just a few applications.

Glass to Metal Seals

Glass and metal fused together to form leak-tight joints are glass to metal seals. These types of seals are all around you every day, due mainly to their versatility and strength.  Known for their exceptional hermetic values, these types of seals are critical in the construction of vacuum tubes, pressure tight glass windows and any number of electronic components to name just a few applications. GTMs are especially useful in the lighting industry, with the most common application being the seal on a lamp bulb.

 Ceramic to Metal Seals

Ceramic to Metal seal is more costly and time consuming to make than a glass to metal seal. Some say it is worth for applications where high operating temperatures, high voltage and harsh environments are required. Ceramic can be made in custom designs and show more resistance to mechanical and thermal shocks.

When zero porosity is required, hermetic sealing is the reliable choice. Know your options by understanding the different sealing possibilities and ensure you’re choosing the best sealing method.