In brief: Pentair replacement pool light retaining ring. Pentair part number 79100600.
The ring that holds the light in place
The retaining ring holds the light in its niche and compresses the gasket. It is a permanently submerged part, exposed to chlorine or salt.
A corroded or warped ring, or one with a damaged mounting point, no longer compresses evenly. The light shifts in its niche, and the gasket no longer seals properly.
It is an inexpensive part, but leaving it in poor condition can end up costing you an entire light fixture.
Official Pentair specifications
| Part number |
79100600 |
| Type |
Light retaining ring |
| Application |
Pentair pool lights |
| Genuine part |
Yes, Pentair part |
Frequently asked questions
How can I tell if the ring needs replacing?
Place it on a flat surface: if it does not sit flush all the way around, it is warped. Also check for corrosion and inspect the mounting points.
Should I replace the gasket at the same time?
Yes, if the light is open. A gasket that has been compressed for years will not return to its original shape.
Will this ring fit my model?
Send us a photo of your light and its niche. Rings are not interchangeable across all product lines.
Service on the North Shore
Piscines Geyser stocks Pentair parts in Blainville and serves the Laurentians. If you are unsure whether it is the right fit, send us a photo of your installation: we will confirm before shipping.
