Pentair 78880200 white rubber lens seal for the Aqualumin light assemblyPentair Lens Seal for Aqualumin Light Assembly, 78880200 In stock$3699
Pentair 78880200 white rubber lens seal for the Aqualumin light assembly

Pentair Lens Seal for Aqualumin Light Assembly, 78880200

Ask a questionMPN 78880200
$3699
In stock

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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.
Full description and specifications ↓

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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.

Specifications
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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Questions and answers

What people ask about this product, answered by our pool techs.

What are the dimensions?
7-1/2 inch outside diameter, 6-3/4 inch inside diameter. The cross section is L shaped and steps from 1/4 inch thick on the inside to 1/8 inch on the outside.
Is this a plain o-ring?
No. It is a stepped gasket with an L shaped cross section, so it has a defined orientation. Note which way the old one sat before you pull it out.
Which light does it fit?
The Pentair Aqualumin light assembly. It is the genuine Pentair part, number 78880200.
Should I replace it when I change the bulb?
It is the sensible time to do it. The seal is what keeps water out of the fixture, it hardens with heat and age, and it costs far less than the light it protects.
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