Bottles Options When it Comes to Hot Filling. It is important to note that not all bottles are hot fill compatible. A quick review of our Which Plastic Is Right For Me Infographic reveals that most common plastic resin cannot withstand hot filling temperatures (Refer to Temperature Tolerance characteristics section for details). However, there are common technologies that will enable a specific type of PET plastic to be hot fill compatible. They are generally referred to as "Heat-set PET". Heat-set PET is now a common plastic container type in many hot fill beverage applications. They are specifically made to withstand hot-fill temperatures, in some cases up to 192 F, while maintaining clarity and lightweight characteristics. PET is also recyclable, making it a good alternative to glass, which is also hot fill compatible. We have compiled a short (not exhaustive list) of heat-set PET bottles here as a reference.