Pentair 79116900 bulb assembly o-ring for AquaLuminator and Quasar pool lightsPentair Bulb Assembly O-Ring, 79116900 In stock$399
Pentair 79116900 bulb assembly o-ring for AquaLuminator and Quasar pool lights
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Pentair Bulb Assembly O-Ring, 79116900

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$399
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Quick overview

  • Genuine Pentair Factory o-ring, part number 79116900.
  • Fits three light families Listed for the AquaLuminator, the CAL Color AquaLuminator and the Quasar.
  • Seals the bulb assembly This is the o-ring that keeps pool water out of the lamp housing.
  • Replace with every bulb An o-ring that has taken a set will not reseal, and a flooded fixture is the usual result.
  • Cheap insurance It costs a fraction of the fixture it protects.
  • Lubricate on assembly A thin film of silicone lubricant, never petroleum based, helps the seal sit correctly.
Full description and specifications ↓

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Product details

This is the Pentair 79116900, the bulb assembly o-ring used on the AquaLuminator, the CAL Color AquaLuminator and the Quasar pool lights. It is the genuine Pentair part.

What it seals

The o-ring sits at the bulb assembly and is the barrier between pool water and the lamp. It spends its life compressed, warm and submerged, and rubber under those conditions gradually hardens and takes the shape of the groove it sits in. Once that happens it no longer springs back to seal, and the fixture floods.

When to change it

Change the o-ring any time the light is opened, especially when the bulb is replaced. Wipe the groove clean, fit the new ring with a thin film of silicone lubricant made for pool o-rings, and keep petroleum based grease well away from it. It is a small part that protects an expensive fixture.

Specifications
Brand Pentair
Manufacturer part number 79116900
UPC 788379698133
Type O-ring
Location Bulb assembly
Fits Pentair AquaLuminator, CAL Color AquaLuminator, Quasar lights
Shipping weight 0.01 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 o-ring fit?
The Pentair AquaLuminator, the CAL Color AquaLuminator and the Quasar.
Do I need a new o-ring when I change the bulb?
It is strongly recommended. An o-ring that has been compressed and heated for years will not reseal reliably, and a leaking seal floods the fixture.
Should I grease it?
Use a thin film of silicone lubricant made for pool o-rings. Petroleum based grease attacks the rubber.
Is it a genuine Pentair part?
Yes. It is Pentair part number 79116900.
Ask your own question