Optional packing and gasket materials are available for a full range of service conditions.
可提供备选填料和垫圈材料，以满足各种应用环境。
Pay especially careful attention to the packing and gasket materials as this may limit the rating as is the case with PTFE used as the standard in Aloyco valves.
要特别注意密封材料和衬垫材料，这些材料相当程度上决定了阀门的压力-温度额定值。
Pay especially careful attention to the packing and gasket materials as this may limit the rating as is the case with PTFE used as the standard in Aloyco valves.
要特别注意密封材料和衬垫材料，这些材料相当程度上决定了阀门的压力-温度额定值。
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