Fluorosilicone rubber is a special rubber material. The main functions of fluorosilicone rubber include dynamic and static sealing, resistance to high temperatures, fuel and chemical media, preventing hose leakage, facilitating flexible design, reducing vibration, etc. In specific applications, fluorosilicone rubber products can be used for engine seals, O-rings and gaskets, intake manifold gaskets, oil pan gaskets, front cover gaskets, radiator tank gaskets, valves/valves, etc.


Application areas

Fuel system: fuel system seals, exhaust gas circulation valves, engine gaskets, fuel system vibrator seals, etc.


Power system: radiator hose, turbocharger hose, air delivery hose, etc.

Electrical system: various precision components, such as connectors and plug-ins.

Main performance

High and low temperature properties of fluorosilicone rubber:

The high and low temperature resistance of fluorosilicone rubber is much stronger than that of fluororubber, and the tear strength of fluorosilicone rubber is higher than that of fluororubber. The elongation at break of fluorosilicone rubber is significantly higher than that of fluororubber. Fluorosilicone rubber has a lower glass transition temperature and therefore generally has a wider operating temperature range than Viton. In high temperature applications, fluorosilicone rubber has better tensile strength and tear strength than fluororubber.


Oil resistance of fluorosilicone rubber:

Compared with ordinary silicone rubber, fluorosilicone rubber has higher oil resistance, mainly because its molecular chain contains fluorine. Fluorine is highly inert, hydrophilic and hydrophobic, and can effectively resist the penetration and adsorption of oil media. However, it should be noted that it is not resistant to low-molecular ketones, ethers, and esters, and is not resistant to amines, ammonia, hydrofluoric acid, chlorosulfonic acid, and phosphoric acid hydraulic oils.

Weather resistance of fluorosilicone rubber:

Fluorosilicone rubber shows good weather resistance outdoors or in harsh environments, mainly because the silicone rubber molecular chain contains silicon element, which forms a silicon-oxygen bond with oxygen element. This bond can effectively resist oxidation and ultraviolet rays. erosion.

Acid and alkali resistance of fluorosilicone rubber:

Fluorosilicone rubber also shows good resistance in acid and alkali environments, mainly because the molecular chain of fluorosilicone rubber contains fluorine and silicon. Fluorine can resist the erosion of acidic media, and silicon can resist alkaline media. of erosion.

Low temperature flexibility of fluorosilicone rubber:

Fluorosilicone rubber can still maintain a certain degree of flexibility at low temperatures, mainly because its molecular chain contains more fluorine elements. Fluorine elements weaken the force between rubber molecules and increase the distance between molecules, thus increasing the flexibility. Get better.

Flame retardancy of fluorosilicone rubber:

Fluorosilicone rubber is not easy to burn at high temperatures, mainly because its molecular chain contains a large amount of fluorine and silicon. The inertness of fluorine and silicon makes the molecular chain less likely to be oxidized and decomposed, thereby increasing the flame retardancy of the rubber. .

Comparison of fluorosilicone at home and abroad

Technical level: The technical level of foreign fluorosilicone rubber is relatively high, the production process is more mature, and product performance is more stable and reliable, such as processability, low-temperature performance stability, etc. Domestic products are slightly lower than foreign products. In contrast, the technical level of domestic fluorosilicone rubber still has room for improvement.

Brand influence: Foreign fluorosilicone rubber manufacturers have high brand influence and visibility in the international market, while domestic manufacturers have relatively low brand influence and visibility, so there may be competitive pressure in the international market.

Cost-effectiveness: Domestic fluorosilicone rubber is more cost-effective. Although the stability of some properties is lower than that of foreign products, it can still be improved through formula. Even if filler costs are added, its cost-effectiveness is still very high compared to imported products.

General purpose fluorosilicone compound