Both fluorosilicone rubber and phenyl silicone rubber are special silicone rubbers, each with its own characteristics. In comparison, fluorosilicone rubber has the following advantages:

1. Chemical resistance: Fluorosilicone rubber has better resistance to a variety of chemicals, including oils, solvents, acids and alkalis. Phenyl silicone rubber may be relatively less stable in some chemical media.

2. Low temperature resistance: Fluorosilicone rubber usually has better low temperature performance and can maintain good elasticity and physical properties at lower temperatures.

3. Oil resistance: When facing oily substances, fluorosilicone rubber often performs better than phenyl silicone rubber and can better resist oil erosion.

4. Heat stability: Fluorosilicone rubber can maintain its performance stability for a longer time at high temperatures.

However, phenyl silicone rubber also has its own advantages, such as better performance in certain specific high temperature environments. The specific application selection depends on the specific working conditions and requirements.