EAI Pool Oring Jandy Filter Lid Tank Cover O-Ring Repl. for CS100 CS150 CS200

I had to order another one because I found out my pool filter uses two. One on top of the other. It also makes it easier to replace and install if you use a silicone lube.

Works perfectly!

The O rings (2) were probably for a Jandy Pool Pump Filter Basket perhaps and not for the larger stand alone pool filters. Will probably return this.