HTX - High Temperature Hermetic Connector

HTX - Hermetic Seal’s answer to Extreme Harsh Environment Mated Pair Hermetically Sealed Interconnects for the Military and Commercial Aerospace markets. Now available from NYK Component Solutions, via our exclusive European franchise for Ametek Hermetic Seal.

Recent aerospace developments have driven the need for instruments and systems to perform in extreme environments at temperatures not previously specified, especially in commercial jet engine applications.

Hermetic Seal Corporation, a unit of Ametek Interconnect Technologies and a leader in hermetically sealed connectors for extreme environments, has developed interconnection technology that meets the increasingly stringent temperature range and leak rates required for even the most highly demanding aerospace applications.

The HTX connector not only performs in temperatures ranging from -65°C to 440°C (-85°F to 824°F) it maintains its hermetic integrity at an unparalleled 1x10-9 cc/sec of helium at 15 PSI leak rate and an insulation resistance value greater than 500 megaohms@500 VDC. At 426°C (800°F), the HTX connector has an insulation resistance value greater than 1,000 megaohms@500 VDC.  

The current generation of hermetically sealed electrical connectors used by the aerospace industry operate reliably in the -65°C to 260°C (-85°F to 500°F) temperature range with a leak rate of 1x10-7 leak rate and an insulation resistance value of 1,000 megaohms at 500 VDC. However, when subjected to higher temperatures not only does the likelihood of a hermetic seal failure increase but the resistance value of the glass insulator also declines.

These factors result in significantly limiting the functionality of many instruments and motion control devices in high-temperature environments.

The HTX connector utilizes a proprietary glass insulation material that was developed by Hermetic Seal Corporation. This technology enables full electrical functionality in the hermetic receptacle welded to a high-temperature instrument or device as well as the cable terminated plug with which it mates.

In addition, the HTX connector series is available in shells and insert arrangements that meet the dimensional requirements of several MIL specifications.

Download: Product Sheet HTX High Temperature Hermetic Connector

Exclusive European Franchise
Hermetic connectors from AMETEK HCC Industries
Hermetic Seal
HTX high temperature connector for demanding aerospace applications

HTX - High Temperature Hermetic Connector

Product Options:

Available in shells and insert arrangements compatible to several MIL Standards or Customer Specific Design.


  • Temperature Range: -197°C to +440°C (-332°F to +824°F)
  • Electric Performance (IR)
    • >5000 Megohms @ 1000 VDC @ room temperature
    • >1000 Megohms @ 1000 VDC @ 426°C (800°F)
  • Vibration: @ 440°C exceeds 60G’s @ 3000 Hz
  • Hermeticity: 1 x 10-9 CC/Sec at 1 atmosphere

Did you know?

Our HSC's products withstand the most severe environments imaginable: high pressure up to 38,000 PSI at elevated temperature and 45,000 PSI at room temperatures with temperature ranges from –325° F to greater than 1000° F.  An overview of our hermetic connector offering can be found here.