Fuel Sender Gasket

[edasmus]

My sender gasket is leaking on the right (copilot) side wing for the second time in two years (at least my shop thinks it is the gasket). It appears to be a "cork like" gasket. Anybody know if this is the correct type or if there are other options? Are they supposed to be fuel proof? I would simply like to know for certain that the correct and best gasket is getting installed this time because this is growing tiresome.

Thanks, Ed