上海高盾泵阀制造有限公司生产的120机械密封参数如下：安装尺寸规格dDD1D2D3D4LL1L2L3L4120-18183329213243361973.5120-2020352923344336973.5120-25254034283947401973.5120-28284337314247401973.5120-30304539334450431973.5120-35355044364953461973.5120-40405851445757502073.5120-45456356506261542073.5120-50507062556962552273.5120-55557567607464572273.5120-60608072657965582274120-65658577718467602374120-70709283769170632574120-75759788809772652575.5120-8080105958710472652575.51.静环座2.O型圈3.静环4.动环座5.动环6.O型圈7.挡圈8.弹簧)