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High Pressure and High Temperature Hermetic Solutions

Our technology allows us to manufacture connectors and feedthroughs that can be incredibly pressure and temperature resistant.

High Temperature Hermetics

Our technology allows us to manufacture connectors and feedthroughs that can be incredibly temperature resistant. Our High Temperature connectors can provide an effective fire barrier at temperatures up to the working point of the glass, typically 900°C to 1,000°C.

When electrical performance needs to be maintained for a period of time in a high temperature environment, Martec offers connectors rated at up to 450°C.

High Pressure Hermetics

Martec offers a wide range of solutions for high pressure environment, whether underwater immersion or for usage at the surface where water exposure is frequent. With careful material consideration, our products are suitable for extended pressure capabilities of up to 60,000 PSI.


High Temperature & High Pressure Hermetics

In many harsh environments, high pressure is a major challenge. The ability to withstand such pressure is further complicated with elevated temperatures also being a factor. Martec’s High Temperature & High Pressure bulkhead feedthroughs are designed to provide optimal performance and reliability in such hostile conditions.

Featuring 25,000 PSI @ 400 F (204 °C) pressure tight glass sealed connector, with solder cups for 24 AWG wire.

Several pin patterns available from 3 contacts to 39 contacts, different housing sizes with O ring grooves or weld flange.

Subsea Booted Hermetic connectors

The Martec Subsea Booted Connector has been developed for mission critical subsea and downhole instrumentation applications. The push on key located boot-plug and receptacle design allows on-site or workshop harnessing using simple handheld crimp tools.

  • Booted plug provides an alternative to hard wiring ideal for applications requiring periodic maintenance
  • Boot provides a robust and reliable retention of plug to the receptacle, suited to harsh environments
  • 15,000 PSI (1,000 Bar) pressure tight hermetic glass sealed receptacle
  • Weld mountable receptacle or custom housed
  • Seawater-tight boot with individual pressure energised wire seals, no need for gels or grease
  • Crimp contacts for 22 AWG wire (field installed or factory preassembled)

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The assistance provided by Martec during the project was invaluable. Their prompt service enabled us to arrive at a solution within the short time scales of our project, and their advice on the type of vacuum grease to use and how to prepare the contact surfaces to ensure proper sealing was much appreciated. Martec was also most helpful in scheduling the manufacturing of the connectors, which are usually only manufactured to order.


Our engineers reported that the resulting products are some of the “coolest bits of technology that they have worked on” and they are truly a “design win”. On the whole the quality of the product far exceeded our expectations – the levels of finish are exceptional and met all of our design criteria. Martec is an excellent partner.

Design Engineer

It is always refreshing to find a vendor like Martec that acts as a partner in the product development process.  They have been responsive, show enthusiasm, and have demonstrated dedication in delivering a product that meets our needs and the needs of our end customers.

Supply Chain Manager

Dover Group