Caskets are divided into different groups based on criteria such as the material they are constructed of, or if they have or do not have a gasket. Gaskets are used on metal caskets to resist the entrance of outside elements. All caskets are designed to transport the deceased from the funeral home to the cemetery. Caskets come in different sizes. Click on Size Matters for an explaination of casket sizes. Caskets are not designed to support the weight of the dirt after the burial. Use an Outer Burial Container if that is a concern.