Fluorine rubber for sealing materials can be made into gaskets, valve sealing gaskets, O-rings, V-rings, leather cups, oil seals and corrugated connecting pipes for various purposes. These products can withstand temperatures above 200 °C and do not deform in the environment of various oil media. Fluorine rubber sealing materials are mainly used in the automobile and aerospace fields in China. At present, the main products of domestic fluorine rubber materials for auto parts include engine crankshaft front oil seal, crankshaft rear oil seal, valve cylinder oil seal, engine diaphragm, engine cylinder liner resistance Water ring, refueling hose, fuel hose, oil filter check valve, oil filler cap ○-ring, gearbox and reducer oil seal, etc. Fluorine rubber, silicone rubber, acrylate rubber and heat-resistant elastomers will become the development trend and mainstream of rubber materials for automobiles in the future. Many auto parts use fluorine rubber with better performance to replace traditional materials.

When used in the sealing of automobile engines, fluororubber seals can work for a long time at 200 ℃ ~ 250 ℃, and the working life can be the same as the engine repair life; when used in the chemical industry, it can seal inorganic acids (such as 67% at 140 ℃). sulfuric acid, concentrated hydrochloric acid at 70 °C, 30% nitric acid at 90 °C), organic solvents (such as chlorinated hydrocarbons, benzene, high aromatic gasoline) and other organic substances (such as butadiene, styrene, propylene, phenol, 275 °C When used in deep well oil production, it can withstand harsh working conditions of 149 ℃ and 420 atmospheres; when used in superheated steam seals, it can work in a steam medium of 160-170 ℃ for a long time. In the production of single crystal silicon, fluorine rubber seals are commonly used to seal special media at high temperature (300 °C) - trichlorosilane, silicon tetrachloride, gallium arsenide, phosphorus trichloride, trichloroethylene and 120 °C hydrochloric acid etc.

The hose made of fluororubber is suitable for high temperature resistance, oil resistance and special medium resistance. The wire and cable made of fluororubber has good flexibility and good insulation. Fiberglass tape made of fluororubber can withstand high temperature of 300 ℃ and chemical corrosion resistance. After the aramid fabric is coated with fluorine rubber, it can be used to make the connecting expansion pipe between the high temperature resistant, acid and alkali resistant storage tanks in petrochemical plants, which can withstand high pressure, high temperature and medium corrosion, and can buffer the deformation and expansion of the two tanks. connection effect. The plastic cloth sealing bag made of nylon cloth coated with fluorine rubber is used as a soft seal for the internal floating roof storage tank of the oil refinery, which plays the role of sealing and reducing the volatilization loss of the oil level.

Type 23 and tetrapropylene fluororubber are mainly used for corrosive sealing occasions with acid resistance and special chemical resistance. Hydroxynitroso fluororubber is mainly used as protective products and sealing products, as a non-combustible coating in the form of solution, applied to fireproof electronic components and parts that work in pure oxygen. Its solution and liquid rubber can be used to manufacture many products by spraying, pouring and other methods, such as space suits, gloves, pipe belts, balls, etc. It can also be used as an adhesive for glass, metal body, fabric, and gaskets, O-rings, capsules, valve seals, etc. in the manufacture of sponges and rocket propellants (N2O4). G type series fluororubber production The seals have the properties of high temperature steam resistance, methanol gasoline or gasoline containing high aromatic hydrocarbons that cannot be achieved by using VitonA, B, E and other fluororubbers; GLT type fluororubber, chlorinated phosphorus rubber, perfluoroether rubber, etc. Wide operating temperature range, low temperature flexibility, elastic sealing, etc. Perfluoroether rubber also has outstanding medium corrosion resistance and is widely used in military cutting-edge technology. The sealant made of fluororubber—putty, It has outstanding fuel oil resistance and can be used in oil at about 200 °C, and is used as a sealing material for the overall fuel tank of aircraft. The closed-cell sponge made of fluorine rubber has acid resistance, oil resistance, wide operating temperature range and good insulation. , can be used as rocket fuel, solvent, hydraulic oil, lubricating oil and ointment seal and rocket, missile shock absorption material, temperature resistance up to 204 ℃, asbestos fiber cloth impregnated with fluorine rubber emulsion, can be made into asbestos rubber sheet, For high temperature, combustion and chemical resistance applications.