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Thread: Light Fixture wire sealant to fixture?

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    Light Fixture wire sealant to fixture?

    I have a Pentair Amerilite fixture that is leaking. I am changing out the gasket and replacing with a costly LED light.
    Im worried that this fixture is leaking also from the wire going to the back of the fixture, as I have read this is common on these fixtures, but not sure if it is.
    I dont want the leak coming from there and destroying a $$ LED bulb.

    I tried to seal with 100% GE Silicone I but its not ahering to the plastic wire well.
    So I was wondering if you guys can recommend a brand/model of a good sealant to use for salt water pool Pentair fixture, just as a precaution.
    Hopefully someone can chime in....The fixture is about 11 years old and I have a salt water pool.

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    Mod Squad JVTrain's Avatar
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    Re: Light Fixture wire sealant to fixture?

    Check out this thread. Amerilite Pool Light Leaks. A Fix and what I've learned

    I used some of the G Flex epoxy on my light at the wire connection in the back and it worked for about a month. I only did a single application inside the light attachment nut and around the outside of it. I'm planning a further application, like the cardboard mould detailed in the thread.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
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    Re: Light Fixture wire sealant to fixture?

    If I read you correctly, you are concerned about waterproofing the hole where the light fixture wire exits the niche and goes into the pvc pipe.

    That junction is not meant to be waterproof and stays flooded all the time.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Light Fixture wire sealant to fixture?

    Quote Originally Posted by duraleigh View Post
    If I read you correctly, you are concerned about waterproofing the hole where the light fixture wire exits the niche and goes into the pvc pipe.

    That junction is not meant to be waterproof and stays flooded all the time.
    Hi, No - referring to the wire that goes to the Pentair Light Fixture on the back of the metal casing. I read that is can be a source of water entering into the light fixture, along with the gasket.

    So I was thinking about sealing the back metal on the fixture where the wire goes into the Pentair fixture. Just need advice on that is a good sealant to use.

    Also, how tight are you suppose to tighten the "U" wire that secures the gasket and light cover? Ive read from snug to as tight as the bolt will allow you to tighten it.

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    Re: Light Fixture wire sealant to fixture?

    Quote Originally Posted by JVTrain View Post
    Check out this thread. Amerilite Pool Light Leaks. A Fix and what I've learned

    I used some of the G Flex epoxy on my light at the wire connection in the back and it worked for about a month. I only did a single application inside the light attachment nut and around the outside of it. I'm planning a further application, like the cardboard mould detailed in the thread.
    Thanks for the link- the picture is exactly what I want to do- I just silicone but Im afraid it will separate after. Where do you get the G Epoxy? Looks like there are different models. Any recommendation?

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    Mod Squad JVTrain's Avatar
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    Re: Light Fixture wire sealant to fixture?

    I bought mine on amazon. Definitely not cheap, but with a very limited application, it worked. If I go further with sealing up the fixture, I think it will work longer term.

    Link here: Amazon.com : West System 6508 G/Flex Epoxy Bottles 2/Bag : Boating Painting Supplies : Sports Outdoors
    Last edited by JVTrain; 07-07-2016 at 03:06 PM. Reason: Product link
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    Re: Light Fixture wire sealant to fixture?

    I wanted to give an update on this issue. As I was researching for the Epoxy suggestion (which was a great idea) from Marine Shops around my area who carried them. West Marine seems to carry alot of Sealants and glues including this epoxy.
    When I explained my problem, they recommended the 3M 5200 Sealant Fast Cure Sealant instead. This stuff is flexible and very durable and MESSY to use. It just cured and it is very sealed and flexible too.
    Ill be putting into my pool over the weekend and will give an update on how well it works but I guess the 3M is the stuff the Marine Boat shops use all the time for leaks and seals.

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    Mod Squad JVTrain's Avatar
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    Re: Light Fixture wire sealant to fixture?

    Thanks for the update. Let us know how it works. I've been too busy with other house project to move onto phase 2 of the gflex... summer flying by.

    Sent from mobile device. Beware of brevity and spelling errors!
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    Re: Light Fixture wire sealant to fixture?

    Will do.. Thid 3M thing is crazy strong and flexible. Almost like the flex of silicone but super tough. They said it's meant for underwater.


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    Re: Light Fixture wire sealant to fixture?

    Just want to let everyone know that the 3M worked really well. No leaks with any of the fixtures.


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    Mod Squad JVTrain's Avatar
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    Re: Light Fixture wire sealant to fixture?

    Thanks for the update. I'm still procrastinating on my light. Barely enough time to enjoy the pool this summer. Very busy!
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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