The ceramic center rod is made out of a porous white glazed ceramic. A plastic ring made out of polypropene sits down below the tank. There is certainly an o-ring constructed from a silica gel compound that can help seal the ceramic rod in the plastic ring at the https://buy-empty-vape-carts70740.anchor-blog.com/7245922/not-known-facts-about-can-i-buy-dmt-vape-carts-in-europe