
Quick overview
- Genuine Pentair Factory lens seal 78880200 for the Aqualumin light assembly.
- L shaped cross section The seal is stepped, not a plain round o-ring, so it seats one way and only one way.
- Sized to the lens 7-1/2 inch outside diameter and 6-3/4 inch inside diameter.
- Stepped thickness 1/4 inch on the inside, 1/8 inch on the outside.
- White rubber The material Pentair specifies for this seal.
- Replace it with the lamp A seal that has taken heat and years goes hard and flat, and a hard seal is what lets water into a light.
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Product details
The Pentair 78880200 is the lens seal for the Aqualumin light assembly. It is the genuine Pentair part: a white rubber gasket with an L shaped cross section rather than a plain round o-ring.
Dimensions
Outside diameter 7-1/2 inches, inside diameter 6-3/4 inches. The section is stepped, 1/4 inch thick on the inside and 1/8 inch on the outside, which is what lets it sit into the lens groove and seal against the housing face.
Fitting it
Because the section is L shaped, the seal only goes in one way round. Look at how the old one is seated before you lift it out. Seals go hard and take a permanent flat spot after years of lamp heat, so a light that has been opened is worth resealing rather than reusing the old gasket.
| Brand | Pentair |
|---|---|
| Manufacturer part number | 78880200 |
| UPC | 788379698287 |
| Type | Lens seal |
| Material | White rubber |
| Shape | Round gasket with L shaped cross section |
| Outside diameter | 7-1/2" |
| Inside diameter | 6-3/4" |
| Thickness, inside | 1/4" |
| Thickness, outside | 1/8" |
| Fits | Pentair Aqualumin light assembly |
| Shipping weight | 0.05 lb |
| Ships | Parcel |
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