U-PAK004泥状软填料
ZD-RG1000石墨填料环
ZD-RG1100增强石墨填料环
ZD-RG1010自密封石墨填料环
ZD-RP1100石墨盘根环
ZD-RP1100组合填料环
ZD-RP1100碳化纤维盘根环
ZD-RP1310高碳纤维盘根环