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Cable Penetrator bubbles

Hello, Potted my first cable penetrator yesterday and I have a lot of small bubbles trapped in the resin. I live in Australia and your recommended potting epoxies are not available or difficult to acquire here, so I used west systems g/flex 650. Should I use this or start again? 90m will be my max depth, it was very warm here yesterday and the resin set way too quick .

Hi Saul, we use the same epoxy i wouldnt recommend using it like that. I had one like that before and it did fail.
We are from tasmania so high temprature isnt an issue for us but we have had the opposite issue where it was too cold and the epoxy was too thick for the bubbles to escape. Mix it in a climate controlled area and mix it slowly so no bubbles are introduced seems to give us reliable results with g flex.

Hi Saul,

It’s hard to say if this will cause a failure. 90 meters it pretty deep so I would play it safe if possible. If the bubbles are just at the surface it might be okay but if they are throughout it could definitely be an issue. I would also pull on the cable in each direction and see if there is any delamination between the cable and the epoxy or the epoxy and the penetrator.

-Rusty