软质密封垫对法兰面的光洁程度要求低很多，这是因为，它容易变形，能够堵死加工刀纹，从而防止了泄露。
Soft gasket to the bright and clean degree flange low demand a lot, because, this is, it easily, can change processing knife lines, and can prevent the leakage.
其次是法法兰想配套的密封垫应有良好的耐油和抗老化性能，以及比较好的弹性和机械强度。
Second, the flange should be supporting the sealing gasket should have good oil resistance and aging resistance, as well as good flexibility and mechanical strength.
法兰连接时加密封垫后均匀锁紧联接螺栓。
When connecting flange, add sealing mat and lock connected bolt.
光滑面法兰一般只用于低压，配软质的薄密封垫；
Smooth surface only commonly used for low pressure, flange with soft qualitative thin gasket;
计量孔板由铸铁法兰，密封垫，孔板（铸铁或不锈钢）组成。
They are built with cast iron flanges, gaskets and orifice plates (either mild steel or stainless).
计量孔板由铸铁法兰，密封垫，孔板（铸铁或不锈钢）组成。
They are built with cast iron flanges, gaskets and orifice plates (either mild steel or stainless).
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