The valve seal material can be Perfluoroelastomer or Viton, and it is designed to inflate after the valve segment is closed.
阀门密封材料采用全氟弹性材料或氟橡胶，在阀门关闭之后会充气膨胀。
NBR rubber O-rings provide trouble-free operation at standard temperature ranges. For high and low temperature applications Viton or Silicone.
在常温工作条件下使用丁晴橡胶，在高温或低温时采用氟橡胶或硅橡胶。
NBR rubber O-rings provide trouble-free operation at standard temperature ranges. For high and low temperature applications Viton or Silicone.
在常温工作条件下使用丁晴橡胶，在高温或低温时采用氟橡胶或硅橡胶。
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