典型的金属垫圈用铅或软铜制作。

A typical metallic washer is made from lead or softened copper.

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金属垫圈，材料：铜、铁、钢等，依来图来样生产。

Metal washers made of iron, steel, copper, etc. according to supplied drawings or samples.

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在安装夹管阀时，如果采用橡胶、PVC或任何“光滑的”配套法兰，则我们建议在两个法兰之间加装一个金属锯齿垫圈以增强密封效果。

When installing a pinch valve to a rubber, PVC, or any "slick" mating flange, we recommend that you install a metal serrated gasket between the two flanges to assist in the seal.

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