Fuel Pump Install Went Wrong

[SargeRX8]

Its just one thing after another for me

Installed my fuel pump into the car. All was well and fine. Filled up a tank a while ago all was fine. Filled up a tank today, payed for it then walking back to the car I noticed it leaking. Rolled the car back and removed the lid and noticed the lid was drenched in fuel(the lid on the fuel tank where you change the pump). I suspect I have either A damaged the gasket or B not tightened it enough.

Well with a full tank in there, I cant really do anything until I run it dry as I did fill it literally to the top(two clicks of the pump cutting off lol). Luckily its not leaking anymore though.

Where do I get a replacement gasket? I can try tighten the lid tomorrow but I risk further damaging the gasket if its kinked up in there. I can get the old one from my other car but as with everything which made contact with fuel, its probably dry as shit now.

[DVS JEZ]

A new gasket should always be used as the rubber swells straight away when removed.

Only way to overcome this is to put into a freezer bag and leave in the freezer until ready to refit. This helps to stop the rubber from swelling.

Nissan should have the gasket for $15. Burson etc may also have it