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Martec develops and manufactures high reliability, innovative interconnection devices you need for your critical oceanology and subsea projects.

Our specialist connectors and penetrators meet the most treacherous operating requirements, in regards to safety, productivity and performance.

Our specialist connectors, penetrators and products meet the requirements for subsea and oceanology environments.


  • Secondary containment seals
  • High pressure – tested to 60,000psi and 150°C
  • Exceptional leak rate performance (up to 1 x 10¯10 mbarl/sec Helium)
  • Corrosion resistance materials
Our products can be found in both surface and subsea applications including:


  • Sea wire penetrators
  • Subsea cable terminator
  • Subsea drilling & production systems
  • Subsea condition monitoring & Subsea control modules (SCM)
  • Corrosion monitoring
  • Acoustic leak detection
  • Subsea connectors for solenoid and control units
  • Towed arrays
  • ROV optical systems

Related products Subsea

Subsea Booted connector

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.

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High Pressure solutions

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.

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Catalogues 16 February 2024

Industrial Feedthrough Catalogue

Case Study 20 October 2022

ABB Offshore Systems Ltd

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