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Thread: Question about housing/seal for Pool Light.

  1. Back To Top    #1

    Join Date
    Mar 2008

    Question about housing/seal for Pool Light.

    My pool light quit working, so I unscrewed the housing and pulled it out. When I popped open the housing, the rubber seal was very tight to the housing and had some sort of substance on it. Almost seemed like a dried version of grease. Is there some specific substance I should be using here? or just clean up the seal, put a little silicone grease on and tighten it up?

    Thanks for the help!
    15000 Gal (I think) Gunite In-ground. Cartridge Filter. SWG.

  2. Back To Top    #2

    Join Date
    Jun 2007
    SF Bay Area

    Here is a recent thread about pool light repair. ... ght=#48281

    Pool lube was probably used on the gasket. It starts out very sticky and can dry to something like you are describing.

    Whatever you do, DO NOT REUSE the old gasket. ALWAYS buy a new gasket.

    Replace the bulb. You can turn on the pool light out of the water for only about ten seconds. Any longer and the pool light will get very very hot. Install the new gasket. Place the light fixture in the water (before installing in the niche in the pool wall) and check that there are no air bubbles coming from the light fixture. If there are air bubbles, you need to try reinstalling the gasket again.

    If the bulb does not light up in the previous paragraph, then post again and we'll walk you through what to do.

    Good luck!


    P.S. Please be very careful in turning the power on and off. Mistakes here can be shocking.
    24,000 gallon inground freeform pool/spa circa 1983 (113 ft perimeter, 625 sq ft) with 350 gallon attached spill-over spa
    2007 2 HP, three-phase Hayward TriStar pump which is powered by an Ikeric VS-200 variable speed drive system
    1983 Laars XE Pool/Spa Heater Type ES 400,000 BTU, 1998 Hayward Super Star-Clear C-4000 cartridge filter (400 sq ft, 4 separate cartridges)
    1998 Polaris 380 pressure-side cleaner w/ 3/4 HP booster pump
    One skimmer :( and one PoolSkim :), One Supervision Galaxy LED pool lamp, Second story solar panels
    Hayward/GoldLine AquaLogic PS4 (replaced 1983 vintage dual circuit Intermatic timer)

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