Where Does The Rubber Ring Go On Fluval 403?

[mauve]

hi, I got this Fluval 403 Filter on a garage sale. Inside, a loose rubber ring knocking around. After searching around interenet I figured, it is a seal of some kind, but it is unclear where to install it. The manufacturer's site is useless with their microscopic illustrations.
Does anyone know where to put that ring?
Thanks.

 

[BillD]

It goes on the lower step of the head. It seals the top to the canister.

 

[roka64]

It seals the top to the canister.

Right, it should go around the top of the lid. It is the seal between the top and bottom. I would put it on and run it for a little bit in your sink/tub, just to make sure there are no leaks....

 

[mauve]

I've tried to do that but it is a pain to put that ring on ( there is is no apparent groove to put that ring in) but it keeps rolling off. And even though I finally managed to keep it in place the lid would not close/lock.....
Is this where it is supposed to go?

 

[roka64]

I have the 304 and I believe you can't see it from the outside. I have to clean mine tonight, so I will double check....

+++EDIT+++
See if this helps, it is a little hard to see, but might help.

http://www.hagen.com/usa/aquatic/manuals/fluve21.cfm

http://www.hagen.com/usa/aquatic/manuals/fluve01.cfm

 

[Lonewolfblue]

I don't have a fluval, but is that a groove below where the ring is in the current picture? If it is, will it fit in there and close?

 

[BillD]

Lwb is correct. It goes on the first step.

 

[mauve]

After putting that ring on the first step and pushing hard the lid finally closed.
Thank you. Now I proceed to test it for leakage.

 

[roka64]

Cool, good luck!