What is the difference between fluorine rubber sealing ring and silicone rubber sealing ring?

Silicone rubber sealing ring: both high temperature resistance (up to 300℃), and low temperature resistance (-100℃), is the best cold resistance, high temperature resistant rubber; and excellent electrical insulation, high thermal oxidation and ozone stability, high chemical inertia.Disadvantages are low strength, poor solvent resistance and poor acid and alkali resistance, more difficult to vulfide, the price is more expensive. Fluorine rubber sealing ring: not afraid of acid and alkali, oil resistance is the best oil-resistant rubber, radiation resistance and high vacuum is excellent; is a comprehensive special synthetic rubber.The disadvantages are poor processivity, expensive price, poor cold resistance, low elasticity and air permeability.The use temperature under static seal is preferably limited to between about-26℃ and 282℃, and the most suitable temperature for use under dynamic seal is between-15℃ and 280℃, and the low temperature is up to-40℃.