Review on Camco 25071 Universal Conditioner Gasket by Tyler Smith

Revain recommended this when I bought my air conditioner so I figured I should use it for the installation. WRONG, it leaked and I had to start over. The included gasket is all you need. If you are installing on a ribbed van roof like mine, fill the ribs with butyl tape and then seal with butyl tape. Then use the lap sealant and finally lay down the air conditioner with the gasket pre-assembled. There will be no leaks if you do everything right.