Cable is too thin for penetrator but this is the smallest penetrator possible for our application

[EliotBR (Eliot)]

Hi @Ali, welcome to the forum

@Ali

I’m part of a group using BlueROV2 for an acoustic positioning project.

Sounds exciting - hopefully you can keep us updated on your progress!

@Ali

The cable of the hydrophones is 2.2 mm in width while the connectors are 6.35 mm in width. This requires us to use the 6.5 mm penetrators to thread the hydrophones through, but we aren’t sure how to close the gap between the cable and penetrator to get a watertight seal. … Any suggestions?

This post is likely worth a read, for a few different ideas and suggestions.

Connectorising the cables (per @Qlowe’s suggestion) is potentially more robust from an enclosure watertightness perspective, but may cause issues with the signal integrity (depending on what kind of cable and signal you’re using), and is likely a bit more work.