The Platinum Pharmatech Paste Kettle Vessel is made of an Inner Shell & Jacket. The Shell conforming to SS316L is 1.6mm thick, Insulated Jacket is manufactured with SS304g, - 1.6mm thick and a twin Nozzle for Inlet & Outlet Jackets ½” size with 2” TC End for two sides, Puff Insulation and Top Lid is made with SS316L, 1.6mm thickness.