What material the O-ring to high temperature, 300 degrees above
At present, often seen in rubber, can reach 300 degrees only fluorine rubber, but can not be used for a long time, otherwise it will shorten the service life, usually at about 230 degrees. It can reach about 250 degrees by prescription adjustment. Special brand of perfluoro rubber can be maintained for about 300 degrees for a long time, but the price is not so expensive. There are many factors that affect sealing. I wonder what equipment you use on it The choice of sealing material needs to be considered comprehensively. It is also possible to use materials other than rubber, such as graphite, with a temperature of up to three or four Baidu and even higher.
General rubber material temperature range of about 120 degrees, such as butyl rubber (NBR)Fluorine rubber (FPM) high temperature resistance, the highest can reach about 220 degreesPerformance is higher than the fluorine rubber (FFPM), generally resistant to temperature range of 260-330 degrees, the highest can reach 350 degrees, but the price is very expensive
Perfluoro FFPMIt is difficult to manufacture. Perfluorinated products are widely used in the semiconductor industry and information related industries. The range of application includes PVC, CVD and etching process in membrane process and various high vacuum sealing processes
