sealless

1.They work in the sealless magnetic drive pumps,which transporting volatile,flammable,explosive and toxic solutions with no leakage.

它无须直接的机械联接，而是利用稀土永磁体之间的相互作用，利用磁场可穿透一定的空间距离和物质材料的特，进行机械能量的传送。

2.Cyclophos phamide printer power is not enough, print, nbspvacuum box sealless and air hole plug or is not set properly on the evacuation time attributed the exhaust air pressure inside the bad;

①晒版机真空泵功率不敷、晒版框不密封、气孔畅通或抽气工夫撤销不妥等来因变成抽气不良；