[PSUBS-MAILIST] Penetrator materials

[Alan via Personal_Submersibles]

Thanks Sean,
I filed a conical penetrator design, but had forgotten about it!
Alan

Sent from my iPad

> On 18/05/2017, at 9:28 AM, Sean T. Stevenson via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> If you machine the hole through the penetrator as a conical cavity rather than cylindrical, and then use a potting epoxy with some compliance / flexibility, the pressure acting to push the potting compound into the hole will also develop some increased compressive force around the electrodes.
> 
> Sean
> 
> 
>> On May 17, 2017 1:55:51 PM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> Hank,
>> If I cover everything with the glue & then the polyurethane, I won't need to rely on
>> the epoxy for sealing. If the cable was cut then the system would rely on the epoxy
>> as a back up. At that stage I could put up with a temporary dribble; the electrics would
>> be shorting out as well. I will be wary of stripping back enough of the wiring sheath,
>> but failure can also occur between the epoxy & wall of the penetrator.
>> Cheers Alan
>> 
>> 
>> Sent from my iPad
>> 
>>> On 18/05/2017, at 12:02 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>> 
>>> Alan,
>>> That is not correct, the epoxy will not stop the water past 1,000 psi completely.    If the wires are stripped back further so the sealant creates an extra layer against t
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