I. Introduction to Fluorosilicone Rubber
Fluorosilicone rubber is a special synthetic rubber with excellent comprehensive properties, combining the advantages of both silicone rubber and fluororubber. In its molecular structure, the main chain of fluorosilicone rubber consists of alternating silicon and oxygen atoms, with fluorine atoms on the side chains. This unique structure endows it with good heat resistance, cold resistance, and oil resistance, enabling it to maintain stable performance in a wide temperature range of -60β to 200β, thus allowing it to perform outstandingly in various complex working environments.
II. Outstanding Oil Resistance
1. Resistance to Various Oils
Fluorosilicone rubber exhibits strong resistance to a wide range of oils, including mineral oils, animal and vegetable oils, and synthetic oils. When in contact with oils, its volume change is minimal. For example, when immersed in hydraulic oil for a long time, ordinary rubber materials may experience swelling, deformation, or even cracking, while fluorosilicone rubber can maintain its original shape and properties. This is because the fluorine atoms in its molecular chains can effectively prevent the penetration and swelling effects of oil molecules, making it difficult for the oil to destroy the rubber matrix.
2. Durable Oil Resistance
In sealing applications, durable oil resistance is crucial. Fluorosilicone rubber can work in oil environments for a long time without failure. In some automotive engine oil seal applications, fluorosilicone rubber oil seals can operate reliably in high-temperature and high-pressure oil environments for several years. Its excellent durable oil resistance is attributed to its stable chemical structure. The presence of fluorine atoms makes the chemical bonds between rubber molecules more stable, making them less susceptible to destruction by chemical components in the oil, thereby ensuring the long-term reliability of the sealing system.
III. Advantages in Sealing Applications
1. Excellent Sealing Performance
Due to its good oil resistance, fluorosilicone rubber can closely fit various metal or non-metal sealing surfaces. In hydraulic systems, fluorosilicone rubber seals can effectively prevent the leakage of hydraulic oil, ensuring the stability of system pressure. Its good elasticity and flexibility enable it to adapt to sealing parts of different shapes and sizes, forming a reliable sealing barrier even in tiny gaps.
2. Adaptability to Various Working Conditions
In addition to its oil resistance, fluorosilicone rubber can also adapt to a variety of complex working conditions. In the aerospace field, it can maintain good sealing performance in extreme environments such as high vacuum, strong radiation, and alternating high and low temperatures. In oil extraction equipment, it can withstand the oil pressure and corrosive oil in underground high-pressure oil layers, providing protection for the normal operation of the equipment. This adaptability to various working conditions makes fluorosilicone rubber stand out among many sealing materials, becoming the preferred material for the sealing systems of many high-end and complex equipment.
