Clear PP plastic hot fill bottles and snap-lock containers with lids are two forms of acceptable plastic container to use as hot fillable packaging. PET and PP plastic containers and lids are the most popular hot fill options. Heat-set PET is a special term used to describe hot-fill PET bottles and containers. Heat-set PET packaging can withstand temperatures of 192°F, and still retain structural composition. PET is a lightweight, durable, and cost-effective alternative to glass. Glass is also a beneficial hot fill packaging option.