Applicable Flygt Pump Models of This Mechanical Seal:
● 3101(Pump）
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*Related Introduction*
Application of fluorine rubber (FKM)
Fluorine rubber seals, when used for engine sealing, can work for a long time at 200 ℃ ~ 250 ℃, and work at 300 ℃ for a short time. Its working life can be the same as the engine repair life, reaching 1000 to 5000 flight hours (time 5 ~10 years); when used in the chemical industry, it can seal mineral acids (such as 67% sulfuric acid at 140 ℃, concentrated hydrochloric acid at 70 ℃, and 30% nitric acid at ℃), organic solvents (such as chlorinated hydrocarbons, benzene , High aromatic gasoline) and other organic substances (such as butadiene, styrene, propylene, phenol, fatty acids at 275°C, etc.); when used in deep well oil production, it can withstand harsh working conditions of 149°C and 420 atmospheres; When overheating the steam seal, it can work for a long time in the steam medium of 160~170℃. In the production of monocrystalline silicon, fluorine rubber seals are commonly used to seal special media at high temperatures (300°C)-trichlorosilane, silicon tetrachloride, gallium arsenide, phosphorus trichloride, trichloroethylene, and 120°C The hydrochloric acid and so on.
For high vacuum applications, when the flying altitude is 200~300Km, the air pressure is 133×10-6 Pa (10-6mmHg), neoprene rubber, butadiene rubber, butyl rubber can be used; when the flying altitude exceeds 643Km, The air pressure will drop below 133×10-7Pa (10-7mmHg), and only fluorine rubber can be used in this high vacuum. Generally, the high-vacuum or ultra-high-vacuum device system needs to be baked at high temperature before being used. Model 26 and 246 fluoroelastomers can withstand high temperature aging at 200℃~250℃, so they become the most important rubber in high vacuum equipment and spacecraft. Material.
The hose made of fluorine rubber is suitable for high temperature resistance, oil resistance and special medium resistance, such as aircraft fuel oil, hydraulic oil, synthetic diester oil, high temperature hot air, thermal inorganic and other special media (such as chlorinated hydrocarbons and Other chlorides) transportation, guidance, etc. Wires and cables made of fluorine rubber have good flexibility and good insulation. The glass fiber tape made of fluorine rubber can withstand high temperature of 300℃ and resist chemical corrosion. After the aramid cloth is coated with fluorine rubber, it can be used to make the connection expansion pipe between the high temperature resistant, acid and alkali resistant storage tanks of the petrochemical plant (the two ends can be connected with metal flanges), which can withstand high pressure, high temperature and medium corrosion, and The deformation and expansion of the two tanks play a role in buffering and shock-absorbing connection. The rubber-cloth sealed bag made of nylon cloth coated with fluorine rubber is used as a soft seal for the inner floating roof storage tank of an oil refinery to seal and reduce the volatilization loss of the oil level.
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