Hermetic Sealing Technology

Read about news, technical breakthroughs and design best practices related to hermetically sealed wire feedthroughs and hermetic connectors.

New Cryogenic Feedthrough Improves Ease-of-Use

Epoxy-based hermetic feedthroughs have worked well in cryogenic systems for years. But the design modifications needed to operate in these extremely cold temperatures increased the size of the feedthrough and limited your mounting options. We recently eliminated these issues with an entirely new approach to cryogenic feedthrough design.

Intended for use in space simulation, laboratory and liquefied natural gas systems (LNG), our new cryogenic feedthroughs do away with a bulky compression system found on previous designs. Our new design also supports all the common feedthrough mounting styles—including threaded, welded, bolted or vacuum conflat.

In our new white paper, we’ll take a closer look at this cryogenic feedthrough technology and some design strategies such as:

Cryogenic Feedthrough
  • Overcoming coefficient of thermal expansion issues.
  • Finite element analysis (FEA) simulations to optimize the design of the epoxy-metal interface.
  • True hermetic performance in challenging conditions.
  • Easy implementation in a variety of cryogenic systems.


Download The White Paper


Hermetic Feedthroughs Safeguard Mission-Critical Electronics

Many mission-critical electronic devices have to be hermetically sealed to protect them against the ever-present threat of moisture damage.

Sealed electronics cavities are common in many military and defense applications, including missile guidance systems. In the civilian world, sealed electronics play an important role in laser systems, commercial avionics units, high voltage power networks, underwater pumps and automotive lithium battery packs.

Sealed Electronics Cavity

In our latest white paper, we’ll examine the ways moisture can make its way into a sealed electronics cavity. You’ll also learn how the right type of hermetic feedthrough can keep moisture out of an electronics cavity while allowing power and signal conductors to enter.


Get The White Paper Now


New Energy-Efficient System Eliminates Downtime

Douglas Electrical Plant


To reduce the risk that electrical outages will cause production delays that affect our customers, we recently invested more than $500,000 in a new combined heat and power (CHP) generator for our 30,000 square foot manufacturing facility. This system works in conjunction with our existing roof-mounted solar panels, which were installed in 2012.

The CHP system efficiently generates power on-site, while also recovering wasted heat energy for use in both heating and cooling the building. It delivers about 75 kilowatts of energy, while the solar panels kick in as much as 50 kilowatts of off-grid power.

The new system has three key benefits:

Reduces downtime risk. In the past, our facility experienced between 7 and 10 days of downtime each year because of unreliable power delivery. Following an extended period of downtime after Hurricane Sandy, we decided it was time to implement a system that would protect our customers from any electricity-related production delays. Having such a system in place is crucial since we maintain just-in-time manufacturing and delivery schedules for most of our orders.

Improves energy efficiency.   Thanks to our state-of-the-art onsite power generation system, we’ve now reached an 80 percent efficiency on our use of natural gas.  That’s a huge improvement over traditional heating and cooling systems, which typically combine offsite power generation with onsite boilers. According to the U.S. Environmental Protection Agency,  these traditional systems are 45% efficient at best.  The efficiency we’ve achieved with CHP and solar allows us to operate at net zero energy usage during certain periods of the peak solar months.  

Helps the environment. The new CHP and solar system also helps us play our part in protecting the environment, which is important to us and our customers. The system substantially reduces our carbon footprint and supports our ISO 14001:2015 environmental management initiatives.

Douglas Electrical
Address:    5 Middlebury Blvd.
Randolph, NJ 07869
Tel:    973.627.8230
Fax:   866.206.6916
General inquiries:   contactus@douglaselectrical.com
T 973.627-8230
Technical information:   applications@douglaselectrical.com
T 973.627-8230

Engineered Hermetic Seals and Connectors for Wire and Cable

Newsletter Signup