I think it is possible to order extra from Amazon but most people usually request for parts from the manufacturer themselves. This way you are assured of the quality and authenticity of the parts. It is possible to get substandard parts if you don’t get them directly from the manufacturer. And yes, I had to purchase another gasket because mine has worn out. It takes longer to cook meat since the lid is not a tightly sealed with a worn-out gasket. Mine is working just fine after the replacement.