聚四氟乙烯垫片又分为：纯四氟垫片，膨胀四氟，增强四氟，填充四氟等。
PTFE gaskets divided into: pure PTFE gaskets, expanded PTFE gaskets, reinforcing PTFE gaskets, packing PTFE gaskets, etc.
阀体法兰突面上有聚四氟乙烯实体起垫片的作用。
It has a solid one-piece PTFE liner that extends over the raised face portion of the flange face to serve as the gasket.
阀体法兰突面上有聚四氟乙烯实体起垫片的作用。
It has a solid one-piece PTFE liner that extends over the raised face portion of the flange face to serve as the gasket.
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