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1·Oil asbestos packing: it forms the basic structure there are two types of torsional system, and the other is knitting.

油浸石棉盘根：它的基本结构形式有两种，一种是扭制，另一种是编结。

2·For example, in order to prevent secondary pollution, even the use of sewage is not Valve asbestos packing and gasket sealing.

例如为了防止二次污染，即使是排污阀也不采用含石棉的密封填料和垫片。

3·Stems shall be of dezincification-resistant silicon bronze ASTM B 371 or low-zinc alloy B 99, non-asbestos packing and malleable or ductile iron handwheel.

阀杆材质是符合美国材料试验协会ASTM B 371标准抗失锌现象的硅青铜，或B 99低锌合金，不含石棉的填料，和可锻或球墨铸铁手轮。

4·The replacement of original sealing structure by asbestos packing is easy and practical, can make sealing meet the demands for utilization, is convenient to change and maintain, and is of low cost.

用石棉盘根取代原来的密封结构，不仅方法简单适用，密封效果达到使用要求，且更换维护简便，成本低廉。

5·Packing Material: graphite, Teflon, asbestos and special material.

填充料：石墨，聚四氟乙烯，石棉及特殊材质。

6·Made of asbestos Fibre, rubber and heat-resisting packing material, compressing it to thick paper.

石棉纤维制成的，橡胶及耐热包装材料、压缩到厚纸。

7·The graphite molded packing, the asbestos thread PTFE-greased braided packing and the carbon-fibre braided packing were tested and the coefficients of a cycle ring were experimentally determined.

以膨胀石墨模压成型填料、石棉线浸渍聚四氟乙烯编织填料和碳素纤维编织填料为试验样品，实验确定了单圈填料的侧压系数。