Tank cap not seal

Joined Jul 2017
60 Posts | 3+
Sacramento
2024 V4R
Installed a aftermarket racing tank cap, but it seems not to be seal.
There is a large but thin o-ring under the cap body that seem to get pushed out when tying up the bolts. Ever had that? What did you do to fix it?
Anyone knows the part number of this o-ring?
 
2024 V4R
Installed a aftermarket racing tank cap, but it seems not to be seal.
There is a large but thin o-ring under the cap body that seem to get pushed out when tying up the bolts. Ever had that? What did you do to fix it?
Anyone knows the part number of this o-ring?

I watched 2 videos for the rizoma. This is the best one. I have one on order.

 
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