Frequently Asked Questions (FAQ)
VAC-TRON

¿Who is Vac-tron?

VAC-TRON is a company specialized in the manufacturing of high-quality hermetic connectors for industrial, aerospace, scientific facilities, Oil & Gas, defense, medical equipment, and electronics applications. 

¿What is galss-to-metal seal (GTMS)?

Glass-to-Metal Seal technology is used to create a hermetic bond between glass and metal and is widely used in hermetic connectors and feedthroughs. 

The Glass to metal seal is an especial process to join two this similar materials

¿How is it manufacture?

Special glass (typically borosilicate) is melted and bonded to the metal under controlled temperature conditions. As it cools, the glass solidifies and forms a strong, hermetic joint with the metal. This seal prevents the passage of gases and liquids, even under high pressure or vacuum.

¿What is the function of a glass-to-metal seal?

The molten glass bonds to the metal, creating a pore-free joint that ensures there are no gas or liquid leaks—ideal for high-vacuum or high-pressure environments.

The glass acts as a dielectric insulator, separating the electrical conductors from the metal housing. This allows electrical signals to pass through a hermetic barrier without the risk of short circuits.

It withstands very high temperatures (up to 400 °C in some cases) and corrosive environments. Unlike other types of seals (such as polymers), it does not degrade over time, making it highly reliable for long-duration applications.

¿Who need GTMS?

  • If you need to pass electrical signals between two different atmospheres/environments.
  • If your electronic device must operate for more than 15 years without maintenance.
  • If there are temperature variations from –65ºC to 300ºC.
  • If the environment involves high pressure and/or a corrosive atmosphere.
  • If you need to use materials that do not generate outgassing.

¿What types of hermetic connectors do you manufacture?

We manufacture single feedthroughs, multi-feedthroughs, relay bases, connectors, sensor and microsensor bases, filter and oscillator bases and lids, pyrotechnic bases, and custom products.

¿What material are used to manufacture a feedthrough?

Feedthroughs are typically manufactured using high-performance materials that ensure hermeticity, electrical insulation, and long-term reliability. The most common materials include:

  • Metals: Stainless steel, Inconel, Kovar, titanium, and other nickel-iron alloys that offer excellent thermal stability and corrosion resistance.
  • Glass: Special sealing glass, usually borosilicate or alkali-lime glass, used to create the hermetic glass-to-metal seal.
  • Conductors: Copper, nickel-plated copper, gold-plated alloys, or other conductive materials depending on current, voltage, and environmental requirements.
  • Surface finishes: Gold, nickel, or tin plating to enhance conductivity, corrosion resistance, and solderability. 

These materials are selected based on the specific application, operating temperature, required hermeticity, and environmental conditions.

¿What is a feedthrough?

It is a component designed to allow the passage of electrical or optical signals through a wall or barrier without losing airtightness.

¿What is the difference between an airtight connector and one without being airtight?

An airtight connector is designed to prevent the passage of gases, liquids and contaminants between two environments. Withstand extreme temperatures, vibrations and corrosive environments. A standard connector connects electrically or mechanically without requiring airtight sealing allowing the passage of moisture or gases 

What useful life does a connector have?

A connector with GTMS technology is designed to never be replaced.  Unlike a glass-free connector in the same condition it should probably be replaced between 3 – 5 years.

¿Cómo garantizamos la hermeticidad y la calidad?

40 years of experience back us in the GTMS industry and in each manufacture leak tests are performed (helium leak test), to ensure tightness. We also carry out rigorous tests of pressure up to 2000bars, temperature up to 300º and resistance according to different international standards, (MILT-STD-883).
Given that each industry has different needs, we are willing to adapt our quality control system according to the customer’s standards. 

¿Do you offer customized solutions ?

Yes, we develop customized solutions according to the customer’s technical specifications. The vast majority of our manufacturing is custom. 

¿How can I request a quotation?

You can request it through our website or by contacting our business team directly via WhatsApp.