First, everyone knows that the composition of the fkm rubber sheet is mainly a rubber material. This material is made under a very large pressure. It is very unstable at the beginning and may expand or shrink. Therefore, it takes a short relaxation period before normal use can be performed, otherwise the size will not be suitable. You need to pay attention to this, so you should pay special attention when storing. Fluorine rubber sheets cannot be placed in direct sunlight. After long-term exposure, everyone will know what will happen to fkm rubber sheets.