u/No-Butterscotch-3053

I’m installing an SC Project Ebay slip on exhaust and I’m noticing that i need a gasket to connect the exhaust to the pipe on the bike. The ebay seller said to use aluminum foil?

Is it safe to use aluminum foil inbetween the two? or i’ve heard people using clean beer/pop cans?

I’m totally new to the motorcycle world so any advice would be greatly appreciated!!