Comprehensive list for waterproofing

[95yusufabdullah]

Is there, or could you provide, a comprehensive list of technologies/techniques/methods for waterproofing devices, especially devices with sensitive electronics, that are to be used underwater such as ROVs? I'm unable to find a comprehensive list on the search engine.

 

[Gr8blu]

Waterproofing Overview - Underwater Robotics at RMSST

underwaterrobotics.wikidot.com

Submarines & waterproofing them

Hi everyone, It might seem like a silly question but given that 10m of water is about 1 atmosphere, the amount of hydrostatic pressure that deep diving military submarines undergo must present enormous waterproofing & engineering challenges. How is this problem solved? Using metals with large...

www.physicsforums.com

Method of Waterproofing Penetrator Device | SUBLAB WIKI

sublab.wiki

Subsea Coatings | Underwater Coatings | Wolkerstorfer

Underwater coatings require durable materials and reliable techniques. Our subsea coatings are trusted to last in extreme temperatures and high pressure.

wolkerstorfer.com

If you need more, keep searching.

 

[95yusufabdullah]

When you look at this ROV, and you see those wires exposed, how do they prevent water from getting into that? Especially when under the high pressure exerted by the depths that the ROV traverses to?

 

[IRstuff]

When you look at this ROV, and you see those wires exposed, how do they prevent water from getting into that? Especially when under the high pressure exerted by the depths that the ROV traverses to?

What is the physics basis for your concern?

 

[95yusufabdullah]

Unlike the other electronics which sealed and kept in watertight containers, those wires are exposed. Doesn't that leave them vulnerable to water damage?

 

[IRstuff]

Unlike the other electronics which sealed and kept in watertight containers, those wires are exposed. Doesn't that leave them vulnerable to water damage?

What kind of water damage? Insulation is relatively solid and unless you are using something off the wall, there's zero possibility of implosion; the only issue might be compression of the insulation, resulting in less thickness, so high voltages should probably be avoided

 

[Gr8blu]

Choosing the correct cable material prevents moisture ingress through the insulating wall.
Running the cable inside a protective sleeve (like a pipe) does the same thing.

Choosing a good sealing compound will prevent moisture from wicking up from the connection under the insulating layer.
Choosing a good mechanical seal (for pipe-enclosed runs) will do the same thing.

Adding a protective overcoat (like a paint) on the insulation exterior (or on the pipe, if it has one) may help mitigate corrosive effects if environment contains conducting particulate (i.e. salty water, etc.).