# Epoxy recommended for waterproofing

**URL:** <https://discuss.bluerobotics.com/t/epoxy-recommended-for-waterproofing/9882>\
**Category:** General Discussion\
**Created:** [June 10, 2021, 7:48am UTC](https://discuss.bluerobotics.com/t/epoxy-recommended-for-waterproofing/9882 "2021-06-10T07:48:03Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![HanJIK](https://avatars.discourse-cdn.com/v4/letter/h/858c86/32.png) [@HanJIK](https://discuss.bluerobotics.com/u/HanJIK)\
**Post date:** [June 10, 2021, 7:48am UTC](https://discuss.bluerobotics.com/t/epoxy-recommended-for-waterproofing/9882/1 "2021-06-10T07:48:03Z")

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Please tell me the epoxy with similar performance to Loctite Marine Epoxy (USA ONLY). This is a country where I cannot buy Loctite Marine Epoxy.

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**Author:** ![EliotBR](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/eliotbr/32/6937_2.png) [@EliotBR](https://discuss.bluerobotics.com/u/EliotBR)\
**Post date:** [June 11, 2021, 5:17am UTC](https://discuss.bluerobotics.com/t/epoxy-recommended-for-waterproofing/9882/2 "2021-06-11T05:17:55Z")

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Hi @HanJIK,

Are you able to access G/Flex 650? That’s what we’ve recommended previously.

> [@UK alternative to penetrator resin](https://discuss.bluerobotics.com/t/uk-alternative-to-penetrator-resin/2737/3):
>
> Hi Damien, I would recommend looking into [G/Flex 650](https://www.westsystem.com/specialty-epoxies/gflex-650-toughened-epoxy/). It is commonly available in Europe/UK, so I imagine that it will be cheaper there. It performs very similarly to the Loctite Marine Epoxy. We have tested it several times in our depth test chamber to 1000 meters with no leaks. The only difference that you will see is that it is less viscous than the Loctite Marine Epoxy, so you will get a little bit dripping down the cables in your penetrator (1-2 drops; it really isn’t much). If you wait ab…

That thread suggests a few more alternatives that others in the community have tried out and use regularly, so hope that helps 🙂

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**Author:** ![HanJIK](https://avatars.discourse-cdn.com/v4/letter/h/858c86/32.png) [@HanJIK](https://discuss.bluerobotics.com/u/HanJIK)\
**Post date:** [June 11, 2021, 6:00am UTC](https://discuss.bluerobotics.com/t/epoxy-recommended-for-waterproofing/9882/3 "2021-06-11T06:00:54Z")

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Thank you~~~ Eliot

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**Author:** ![HanJIK](https://avatars.discourse-cdn.com/v4/letter/h/858c86/32.png) [@HanJIK](https://discuss.bluerobotics.com/u/HanJIK)\
**Post date:** [June 11, 2021, 6:15am UTC](https://discuss.bluerobotics.com/t/epoxy-recommended-for-waterproofing/9882/4 "2021-06-11T06:15:48Z")

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![image](https://us1.discourse-cdn.com/flex019/uploads/bluerobotics/original/2X/a/ae901b86ab35c0e1e9bba2b200da74429199e058.jpeg)  
Can I use 650-8 G/flex epoxy?  
Is the G/Flex 650 series suitable for use?

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**Author:** ![EliotBR](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/eliotbr/32/6937_2.png) [@EliotBR](https://discuss.bluerobotics.com/u/EliotBR)\
**Post date:** [June 11, 2021, 6:21am UTC](https://discuss.bluerobotics.com/t/epoxy-recommended-for-waterproofing/9882/5 "2021-06-11T06:21:44Z")

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> [@HanJIK](#):
>
> Is the G/Flex 650 series suitable for use?

That’s what we’ve recommended previously, yes 🙂

> [@HanJIK](#):
>
> Can I use 650-8 G/flex epoxy?

I believe the `-8` just refers to the amount, that one should be fine.

Note that if this is for potting penetrators, you might be interested in our newly released [WetLink penetrators](https://bluerobotics.com/store/cables-connectors/penetrators/wlp-vp/) instead, which don’t require any epoxy 🙂

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<div class="post-metadata">

**Author:** ![HanJIK](https://avatars.discourse-cdn.com/v4/letter/h/858c86/32.png) [@HanJIK](https://discuss.bluerobotics.com/u/HanJIK)\
**Post date:** [June 11, 2021, 6:34am UTC](https://discuss.bluerobotics.com/t/epoxy-recommended-for-waterproofing/9882/6 "2021-06-11T06:34:26Z")

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Thank you~`
