Pentair 79108600 white 4 inch AquaLight silicone lens gasketPentair 4" AquaLight Silicone Lens Gasket, White In stock$4499
Pentair 79108600 white 4 inch AquaLight silicone lens gasket

Pentair 4" AquaLight Silicone Lens Gasket, White

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In stock
$4499

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Quick overview

  • Genuine Pentair Factory gasket 79108600, in white silicone.
  • Fits AquaLight 100W and 250W The 4 inch lens gasket shared by both wattages.
  • Silicone Silicone stays flexible far longer in hot, wet service than a rubber gasket.
  • The seal that matters This gasket is what keeps pool water out of the lamp housing.
  • Change it with the lamp The gasket is the part to replace whenever the fixture is opened.
  • Low cost, high consequence A few dollars of gasket against a flooded light fixture.
Full description and specifications ↓

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Product details

The Pentair 79108600 is the white silicone lens gasket for the 4 inch AquaLight, used on both the 100W and the 250W versions. It is the genuine Pentair part.

The part that keeps the light dry

Everything else in a pool light can be perfect and the fixture will still fail if the lens gasket does not seal. This gasket sits between the lens and the housing and is the only thing standing between pool water and the lamp and wiring inside.

Replace it whenever the light is opened

A gasket that has spent several seasons compressed and heat cycled has taken a set and will not seal the same way again. Fitting a new one every time the fixture comes apart is standard practice, and it costs a fraction of what a flooded light does. Silicone is used here for that reason, since it keeps its flexibility through the heat and the water far longer than rubber.

Specifications
Brand Pentair
Manufacturer part number 79108600
UPC 788379698256
Type Silicone lens gasket
Size 4"
Color White
Material Silicone
Fits AquaLight 100W and 250W lights
Shipping weight 0.1 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which lights does this fit?
The 4 inch AquaLight in both the 100W and 250W versions.
Should I replace the gasket when I change the bulb?
Yes. It is the standard practice. The gasket has been compressed and heat cycled for years, and reusing it is how water gets into a fixture that was working fine.
Why silicone instead of rubber?
Silicone holds its flexibility through repeated heat cycles and long submersion, where rubber hardens and takes a permanent set.
Is this the lens itself?
No. This is the gasket that seals between the lens and the housing. The lens is a separate part.
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