
Quick overview
- Genuine Pentair The factory 79108500Z gasket, sized to the SpaBrite and AquaLight lens.
- 4 inch diameter Matched to the 4 inch lens on these fixtures, so it seats without stretching or bunching.
- Rubber A compressible rubber gasket, which is what makes a watertight seal at the lens ring.
- SpaBrite and AquaLight Fits the Pentair SpaBrite and AquaLight pool and spa lights.
- Replace it whenever the light is opened An old gasket has taken a set and will not reseal, and a leaking fixture floods the lamp.
- Cheap part, expensive failure The gasket costs a fraction of the lamp and housing it protects.
Similar products
Other products people compare with this one.
Product details
The Pentair 79108500Z is the 4 inch rubber lens gasket for SpaBrite and AquaLight pool and spa lights. It is the genuine Pentair part.
What it seals
The gasket sits between the lens and the light housing. When the lens ring is tightened down, the rubber compresses and closes the joint, and that seal is the only thing keeping pool water out of the fixture.
Replace it every time you open the light
Rubber that has been clamped in place for a few seasons takes a permanent set and no longer springs back. It looks fine and it is not. Refitting an old gasket after a relamp is the single most common way a light ends up full of water, so put a new one in whenever the lens comes off.
What is included
The gasket only. The lens itself, the color lens kits and the fixture hardware are separate items.
| Brand | Pentair |
|---|---|
| Manufacturer part number | 79108500Z |
| UPC | 788379886844 |
| Type | Lens gasket |
| Material | Rubber |
| Diameter | 4" |
| Fits | Pentair SpaBrite and AquaLight pool and spa lights |
| Shipping weight | 2 lb |
| Ships | Parcel |
Request a quote
Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.
Customer reviews
More from Pentair
Questions and answers
What people ask about this product, answered by our pool techs.





















