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Apollo Aerospace Components

High Temperature Connectors
HTX – Hermetic Seal’s answer to extreme harsh environment mated pair hermetically sealed interconnects for the Military and 
Commercial Aerospace markets. Available from Apollo Aerospace Components, 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 high-temperature connector not only performs from -65°C to 440°C (-85°F to 824°F) it maintains its hermetic integrity at an unparalleled 1×10-9 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. 

High Temperature Connectors Datasheet

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 1×10-7 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 high-temperature 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.


High Temperature Connectors Datasheet

Product Options

Available in shells and insert arrangements compatible with several MIL Standards or customer-specific design.

Connector performance:

  • 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?

These products from Hermetic Seal Corporation 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.
For an overview of our hermetic connectors please click below.