厂家讲述吉林市水泥管橡胶圈的选择与安装， 水泥管密封胶圈的断面为楔形或圆形，圆形直径为承口间隙的1．4倍一1．6倍，橡胶圈的内环直径应为管子外径的85％ ～90％ ，管子直径≦300 mm时为85％ ，直径>300 mm时为90％。胶圈的规格型号、质量是否合格是关键，要对胶圈的级别、公称硬度、拉伸强度、拉断扯断伸长率、压缩永久变形、耐水性、等等做出严格的规定。
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