Harsh Environment / Remote Locations


Remotely Operated Vehicles (ROV) and Autonomous Underwater Vehicles (AUV) are vital systems commonly used in subsea applications for the oil and gas, oceanographic research, and military industry. These underwater vehicles must perform in rugged, pressurized environments where uptime and reliability are critical to the operation, with expensive electronic equipment onboard that must be protected. Greene Tweed’s Seal-Connect ® electrical and optical product lines are designed and tested for harsh environments with vast experience in high pressure environments capable of withstanding operating depths over 20,000 ft with pressure ratings ranging from 25,000 - 35,000 psi. Custom Seal-Connect ® products undergo extensive mechanical property lab testing and can perform in harsh media, saltwater conditions.



The FC connectors use a threaded position keyed coupling connection while the ST connectors feature a bayonet twist-lock (j-slot) connection. When used with an FC adapter , ST adapter , or Permanent Bulkhead Feedthrough (PBF) respectively, the result is a hermetically sealed connection protected from wet environments and particulates that can irreversibly degrade optical fiber. The DRY™ HP Series is intended for use in submerged, seawater environments and can withstand pressures up to 10,000 psi*. All FC and ST connectors have passed stringent immersion and heat/humidity tests with minimal light loss.

For harsher environments, Seal-Connect ® Fiber Optic Extreme ® solutions provide an optical feedthrough system that ensures data transmission when exposed to extreme pressures and extreme temperatures – is capable of withstanding operating pressures of 2 0 ,000 psi and temperatures up to 3 02 °F (1 50 °C). This feedthrough can be designed with up to 24 channels. Along with the Seal-Connect portfolio, Fiber Optic Extreme has high durability and consistent performance in tough, saltwater environments.

*Internal lab testing to 5,000 psi with customer field qualification testing to 10,000 psi

Greene Tweed | 1930 Rankin Road | Houston TX 77073 USA | Phone: +1.281.765.4500 | gtweed.com

18 Statements and recommendations in this publication are based on our experience and knowledge of typical applications of this product and shall not constitute a guarantee of performance nor modify or alter our standard warranty applicable to such products. © 2022, Greene Tweed all rights reserved. All trademarks are property of their respective owners.

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