8 3/8" Lens Gasket for Amerlite Incandescent Underwater Pool Lights
Product Overview
Replacing your Amerlite bulb requires a fresh gasket to keep high-wattage incandescent heat from compromising the watertight seal.
Every time you open a Pentair Amerlite fixture for service, replacing the 79101600Z 8 3/8-inch lens gasket is standard maintenance protocol. Amerlite incandescent lamps run between 300W and 500W, generating sustained internal heat that permanently hardens and compresses rubber over time. This genuine Pentair molded gasket restores factory-spec compression between the glass lens and stainless steel housing to eliminate moisture intrusion and tripped GFCI breakers.
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Benefits & What Makes It Different
Factory-Molded 8 3/8-Inch Profile
Seats precisely over the rim of standard Amerlite glass lenses without stretching, binding, or slipping during clamp installation.
Thermal-Resistant Elastomer
Engineered to withstand the sustained high operating temperatures produced by 300-watt and 500-watt incandescent pool lamps.
Watertight GFCI Protection
Maintains hydrostatic seal integrity against pool water pressure, stopping moisture leaks that short bulbs and trip electrical breakers.
Compatibility
- Pentair Amerlite Incandescent Underwater Lights (all 8 3/8-inch face ring models)
- Pentair / PacFab / Purex incandescent pool fixtures requiring part 79101600 or 79101600Z
- Standard 8 3/8-inch diameter pool light glass lenses
When To Use This
Pro Tip
Install the gasket completely dry around the lens. As you tighten the brass clamp screw, tap around the circumference of the clamp band with the plastic handle of a screwdriver; this settles the band evenly over the gasket and prevents high-spot pinching.
Common Questions & Instructions
Can I reuse my old Pentair Amerlite lens gasket when replacing the bulb?
No. Heat cycles and continuous clamping cause rubber gaskets to take a permanent set. Reusing a flattened gasket leaves microscopic gaps that allow water to enter the housing, destroying the new bulb and tripping the GFCI.
Do I need to apply silicone or lubricant to this pool light gasket?
Never apply silicone sealant or petroleum-based lubricants to this gasket. Pentair engineered the 79101600Z to form a dry mechanical compression seal; applying lubricants can cause the gasket to pinch or slip out of alignment during torquing.
What causes a newly installed Amerlite light gasket to leak?
The most frequent cause is uneven tightening of the bronze clamp band. The clamp nut should be tightened gradually while tapping the band perimeter lightly with a rubber tool handle to ensure the gasket seats evenly all the way around.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
