# Potting **URL:** https://discuss.bluerobotics.com/c/blue-robotics-products/potting/32.md [Latest](https://discuss.bluerobotics.com/latest.md) · [Categories](https://discuss.bluerobotics.com/categories.md) · [Tags](https://discuss.bluerobotics.com/tags.md) --- ## [Best approach for sealing a small cable loom through a pressure housing?](https://discuss.bluerobotics.com/t/best-approach-for-sealing-a-small-cable-loom-through-a-pressure-housing/23470)
**Author:** [@gsrednick](https://discuss.bluerobotics.com/u/gsrednick)\ **Replies:** 0\ **Last updated:** [August 14, 2026, 9:39pm UTC](https://discuss.bluerobotics.com/t/best-approach-for-sealing-a-small-cable-loom-through-a-pressure-housing/23470 "2026-08-14T21:39:17Z")
I’m working on a small underwater housing that needs to pass a compact loom (6-7mm in diameter) of several different cables through a single penetration, rather than using a separate penetrator for every cable. Space on … --- ## [Discussion for Penetrating Large Cables](https://discuss.bluerobotics.com/t/discussion-for-penetrating-large-cables/14681)
**Author:** [@capalongodillon](https://discuss.bluerobotics.com/u/capalongodillon)\ **Replies:** 0\ **Last updated:** [July 11, 2023, 2:29pm UTC](https://discuss.bluerobotics.com/t/discussion-for-penetrating-large-cables/14681 "2023-07-11T14:29:30Z")
Hello all, I’m conducting research which requires me to make my own custom hull enclosure with air tight seals. I use Blue Robotics penetrators all the time in my competitive submarine club, but I want to use them for m… --- ## [Cast/Pot whole BasicESC using resin 2131?](https://discuss.bluerobotics.com/t/cast-pot-whole-basicesc-using-resin-2131/12904)
**Author:** [@jano](https://discuss.bluerobotics.com/u/jano)\ **Replies:** 1\ **Last updated:** [September 15, 2022, 11:32am UTC](https://discuss.bluerobotics.com/t/cast-pot-whole-basicesc-using-resin-2131/12904 "2022-09-15T11:32:23Z")
Hi everybody, due to lack of space at our non-moving application it may become necessary to locate the BasicESC outside of the device housing casted right into the cable of the Thruster. Is there any experience around … --- ## [Potting with Silicone Wire](https://discuss.bluerobotics.com/t/potting-with-silicone-wire/11678)
**Author:** [@Makenna](https://discuss.bluerobotics.com/u/Makenna)\ **Replies:** 5\ **Last updated:** [April 18, 2022, 3:44am UTC](https://discuss.bluerobotics.com/t/potting-with-silicone-wire/11678 "2022-04-18T03:44:55Z")
I am trying to use two 8AWG silicone wires to supply power to my MATE ROV. I tried to use both wetlinks and potted connectors, but neither maintained a seal on the underwater enclosure. Is there another potting compound … --- ## [Wire Splitting at Epoxy Seam](https://discuss.bluerobotics.com/t/wire-splitting-at-epoxy-seam/11688)
**Author:** [@Makenna](https://discuss.bluerobotics.com/u/Makenna)\ **Replies:** 2\ **Last updated:** [March 13, 2022, 12:32pm UTC](https://discuss.bluerobotics.com/t/wire-splitting-at-epoxy-seam/11688 "2022-03-13T12:32:32Z")
I potted this cable McMaster-Carr using Loctite marine epoxy and the potting kit sold at blue robotics, got a very clean initial finish and the connectors even passed the vacuum seal test. I had to remove the penetrators… --- ## [Wetlink Thixotropic Potting Compound still available?](https://discuss.bluerobotics.com/t/wetlink-thixotropic-potting-compound-still-available/10881)
**Author:** [@Amoeba](https://discuss.bluerobotics.com/u/Amoeba)\ **Replies:** 1\ **Last updated:** [October 24, 2021, 11:35pm UTC](https://discuss.bluerobotics.com/t/wetlink-thixotropic-potting-compound-still-available/10881 "2021-10-24T23:35:43Z")
Thixotropic Potting Compound This page is no longer accessible. This was recommended to be used with the dispenser. If the thioxtropic compound is not available will the loctite marine epoxy package also fit on the disp… --- ## [Polyurethane potting](https://discuss.bluerobotics.com/t/polyurethane-potting/10481)
**Author:** [@Charles](https://discuss.bluerobotics.com/u/Charles)\ **Replies:** 2\ **Last updated:** [September 10, 2021, 5:39pm UTC](https://discuss.bluerobotics.com/t/polyurethane-potting/10481 "2021-09-10T17:39:01Z")
Hi, while looking for available potting compound in Canada, I found this :https://www.mgchemicals.com/downloads/tds/tds-8800-2parts.pdf It might stick more easily on the polyurethane tether, No? Does some one tried it… --- ## [Which penetrator for ping cable?](https://discuss.bluerobotics.com/t/which-penetrator-for-ping-cable/10145)
**Author:** [@clyde](https://discuss.bluerobotics.com/u/clyde)\ **Replies:** 2\ **Last updated:** [July 12, 2021, 2:07pm UTC](https://discuss.bluerobotics.com/t/which-penetrator-for-ping-cable/10145 "2021-07-12T14:07:57Z")
Which penetrator do you recommend for the ping cable? I have a spare “M10 thread, for 3-4mm cable” (black) which looks like it’ll work, though the ping cable is listed as 4.5mm. Would the “M10 thread, for 4-5mm cable” (r… --- ## [Potting material in Europe](https://discuss.bluerobotics.com/t/potting-material-in-europe/8463)
**Author:** [@mateov](https://discuss.bluerobotics.com/u/mateov)\ **Replies:** 14\ **Last updated:** [April 29, 2021, 1:09pm UTC](https://discuss.bluerobotics.com/t/potting-material-in-europe/8463 "2021-04-29T13:09:01Z")
Hi all, We had quite a few leaks trough our penetrators on our BR2, since we have it (around 4 years now), last one being trough tether cable (first version, not the revised one). We more or less solved problems trough… --- ## [Potting multiple conductors without jacket into same penetrator](https://discuss.bluerobotics.com/t/potting-multiple-conductors-without-jacket-into-same-penetrator/9530)
**Author:** [@Greg](https://discuss.bluerobotics.com/u/Greg)\ **Replies:** 2\ **Last updated:** [April 27, 2021, 9:54pm UTC](https://discuss.bluerobotics.com/t/potting-multiple-conductors-without-jacket-into-same-penetrator/9530 "2021-04-27T21:54:23Z")
Folks, Does anyone have experience potting multiple conductors without a single outer jacket into the cable penetrators for watertight enclosures? I would like to do this to reduce the number of penetrators and also not… --- ## [Marine Epoxy in Europe](https://discuss.bluerobotics.com/t/marine-epoxy-in-europe/347)
**Author:** [@davidfornas](https://discuss.bluerobotics.com/u/davidfornas)\ **Replies:** 23\ **Last updated:** [January 1, 2021, 4:30am UTC](https://discuss.bluerobotics.com/t/marine-epoxy-in-europe/347 "2021-01-01T04:30:08Z")
Hi! I’m trying to pot the cable penetrators. Problem is the Loctite Marine Epoxy used by BlueRobotics is not available in (or easily available) in Europe. We have bought this https://www.amazon.es/J-B-WELD-Epoxy-Syringe-… --- ## [Cable Penetrator bubbles](https://discuss.bluerobotics.com/t/cable-penetrator-bubbles/6476)
**Author:** [@SJ075](https://discuss.bluerobotics.com/u/SJ075)\ **Replies:** 3\ **Last updated:** [October 28, 2020, 2:47pm UTC](https://discuss.bluerobotics.com/t/cable-penetrator-bubbles/6476 "2020-10-28T14:47:47Z")
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… --- ## [Problems with bonding the Fanthom tether](https://discuss.bluerobotics.com/t/problems-with-bonding-the-fanthom-tether/1986)
**Author:** [@magnusmyklebost](https://discuss.bluerobotics.com/u/magnusmyklebost)\ **Replies:** 7\ **Last updated:** [August 28, 2020, 10:04am UTC](https://discuss.bluerobotics.com/t/problems-with-bonding-the-fanthom-tether/1986 "2020-08-28T10:04:41Z")
Hi guys, im struggeling with potting the teather to the penetrator. I have tried with a flexible marine grade epoxy (West systems G-flex 650) that works well with the thrusters and Scotchcast resin 40, but none seem to s… --- ## [Potting material](https://discuss.bluerobotics.com/t/potting-material/34)
**Author:** [@bikeben](https://discuss.bluerobotics.com/u/bikeben)\ **Replies:** 14\ **Last updated:** [June 12, 2020, 7:04pm UTC](https://discuss.bluerobotics.com/t/potting-material/34 "2020-06-12T19:04:14Z")
Hi Guys Just recieved my thrusters today, they look great! Thanks for all the hard work! Just wondering what the potting material is? Can you please tell me the supplier and part number? How did you select this specifi… --- ## [Wetlink Thixotropic 80A epoxy cured soft](https://discuss.bluerobotics.com/t/wetlink-thixotropic-80a-epoxy-cured-soft/4371)
**Author:** [@nick-wernicke](https://discuss.bluerobotics.com/u/nick-wernicke)\ **Replies:** 3\ **Last updated:** [September 3, 2019, 10:29pm UTC](https://discuss.bluerobotics.com/t/wetlink-thixotropic-80a-epoxy-cured-soft/4371 "2019-09-03T22:29:46Z")
I tried to follow the instructions for sealing bulkhead penetrators with the Thixotropic 80A potting compound, but it seems I must have messed something up. The platic has cured quite soft, like a gummy bear. What did I… --- ## [Epoxy does not cure](https://discuss.bluerobotics.com/t/epoxy-does-not-cure/5867)
**Author:** [@unario](https://discuss.bluerobotics.com/u/unario)\ **Replies:** 2\ **Last updated:** [August 31, 2019, 1:18am UTC](https://discuss.bluerobotics.com/t/epoxy-does-not-cure/5867 "2019-08-31T01:18:26Z")
Hi folks, I have followed this tutorial to do the potting for a coaxial cable. But the epoxy never cures and is still liquid even after 2 weeks in room temperature. Does anyone have any idea for possible reasons? I’d re… --- ## [4 conductor cable for use with the 6mm penetrator?](https://discuss.bluerobotics.com/t/4-conductor-cable-for-use-with-the-6mm-penetrator/4413)
**Author:** [@nperry](https://discuss.bluerobotics.com/u/nperry)\ **Replies:** 2\ **Last updated:** [February 21, 2019, 5:26pm UTC](https://discuss.bluerobotics.com/t/4-conductor-cable-for-use-with-the-6mm-penetrator/4413 "2019-02-21T17:26:00Z")
Does BR offer, or can anyone recommend a 4 conductor cable that will work with the 6mm penetrators? I am looking for something with at least 4 conductors, 22 AWG or larger, with the correct OD and jacket material to wor… --- ## [BlueROV2 vacuum failure!](https://discuss.bluerobotics.com/t/bluerov2-vacuum-failure/3599)
**Author:** [@Terpsiphone](https://discuss.bluerobotics.com/u/Terpsiphone)\ **Replies:** 5\ **Last updated:** [October 23, 2018, 3:49pm UTC](https://discuss.bluerobotics.com/t/bluerov2-vacuum-failure/3599 "2018-10-23T15:49:36Z")
Our BlueROV2 worked fine in the testing pool, but since it’s first undersea operation (40m deep) the vacuum failed. We examined all aspects following the manual. Finally the submersion test confirmed that the leaks were… --- ## [MG Chemicals 832H like loctite marine epoxy](https://discuss.bluerobotics.com/t/mg-chemicals-832h-like-loctite-marine-epoxy/3197)
**Author:** [@Korrigan](https://discuss.bluerobotics.com/u/Korrigan)\ **Replies:** 5\ **Last updated:** [August 20, 2018, 6:20pm UTC](https://discuss.bluerobotics.com/t/mg-chemicals-832h-like-loctite-marine-epoxy/3197 "2018-08-20T18:20:16Z")
Hye everybody, i’m a french user and i have a question Can i use MG Chemicals 832H like loctite marine epoxy Convenient 1A:1B volume mix ratio Low mixed viscosity of 4 100 cP Extremely high compressive and tensile st… --- ## [Lumen Light Penetrator](https://discuss.bluerobotics.com/t/lumen-light-penetrator/1573)
**Author:** [@Ben](https://discuss.bluerobotics.com/u/Ben)\ **Replies:** 1\ **Last updated:** [October 6, 2017, 5:06pm UTC](https://discuss.bluerobotics.com/t/lumen-light-penetrator/1573 "2017-10-06T17:06:35Z")
I was disassembling the back of the electronics enclosure to connect a payload when I noticed the BR-assembled penetrator for Lumen Lights isn’t potted on both sides. Is this normal or do I need to add some marine epoxy?… --- ## [Leaking penetrators - what have I done wrong?](https://discuss.bluerobotics.com/t/leaking-penetrators-what-have-i-done-wrong/1221)
**Author:** [@nicomalm](https://discuss.bluerobotics.com/u/nicomalm)\ **Replies:** 15\ **Last updated:** [July 17, 2017, 10:53pm UTC](https://discuss.bluerobotics.com/t/leaking-penetrators-what-have-i-done-wrong/1221 "2017-07-17T22:53:39Z")
I just completed my ROV and tried a few, shallow dives. Unfortunately I noticed that a couple of the cable-penetrators are leaking. Not much, a drop every now and then, but of course it is not supposed to be like this. I… --- ## [Cat5/6 cables for penetrators](https://discuss.bluerobotics.com/t/cat5-6-cables-for-penetrators/1161)
**Author:** [@amarburg](https://discuss.bluerobotics.com/u/amarburg)\ **Replies:** 2\ **Last updated:** [June 9, 2017, 3:44pm UTC](https://discuss.bluerobotics.com/t/cat5-6-cables-for-penetrators/1161 "2017-06-09T15:44:15Z")
We’ve recently built a couple of ethernet penetrators using the larger (black) BR penetrators, marine epoxy and whatever Cat5/6 cable we have lying around the IT department. We have had poor bonding between the the epo… --- ## [Penetrator Wire Sealing (take 2)?](https://discuss.bluerobotics.com/t/penetrator-wire-sealing-take-2/235)
**Author:** [@seth-opgenorth](https://discuss.bluerobotics.com/u/seth-opgenorth)\ **Replies:** 4\ **Last updated:** [March 21, 2016, 7:12am UTC](https://discuss.bluerobotics.com/t/penetrator-wire-sealing-take-2/235 "2016-03-21T07:12:26Z")
On my ROV setup, we have 8 penetrators (with the 16/2 BR cable) connected to 8 bilge pumps (Tsunami 1200GPH). The team has noticed that it did leak air slowly when a mild vacuum was applied to the tube, but after discuss… --- ## [Waterproofing Penetrators](https://discuss.bluerobotics.com/t/waterproofing-penetrators/210)
**Author:** [@seth-opgenorth](https://discuss.bluerobotics.com/u/seth-opgenorth)\ **Replies:** 6\ **Last updated:** [February 17, 2016, 9:39am UTC](https://discuss.bluerobotics.com/t/waterproofing-penetrators/210 "2016-02-17T09:39:57Z")
On a 4" tube setup I have 8 sets of penetrators installed, plus a few SubConn bulkheads. The penetrators are all made with the 16/2 cable and marine epoxy, following the instructions. The 16/2 cable is then connected to … --- ## [Potting Compound](https://discuss.bluerobotics.com/t/potting-compound/83)
**Author:** [@patrickg](https://discuss.bluerobotics.com/u/patrickg)\ **Replies:** 12\ **Last updated:** [November 12, 2015, 6:24am UTC](https://discuss.bluerobotics.com/t/potting-compound/83 "2015-11-12T06:24:43Z")
Hi, Any advice on what potting compound to use on the connections of M100 motors? Can’t seem to find Loctite Marine Epoxy anywhere in the UK. Thanks, P